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54157157 = 237013359
BaseRepresentation
bin1100111010010…
…1111101100101
310202220110122122
43032211331211
5102331012112
65212435325
71225220405
oct316457545
9122813578
1054157157
112863008a
1216178b45
13b2b2672
14729a805
154b4b872
hex33a5f65

54157157 has 8 divisors (see below), whose sum is σ = 56609280. Its totient is φ = 51713200.

The previous prime is 54157139. The next prime is 54157183. The reversal of 54157157 is 75175145.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54157157 - 28 = 54156901 is a prime.

It is a super-3 number, since 3×541571573 (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54157127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14444 + ... + 17802.

It is an arithmetic number, because the mean of its divisors is an integer number (7076160).

Almost surely, 254157157 is an apocalyptic number.

It is an amenable number.

54157157 is a deficient number, since it is larger than the sum of its proper divisors (2452123).

54157157 is a wasteful number, since it uses less digits than its factorization.

54157157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4083.

The product of its digits is 24500, while the sum is 35.

The square root of 54157157 is about 7359.1546389514. The cubic root of 54157157 is about 378.3426365173.

The spelling of 54157157 in words is "fifty-four million, one hundred fifty-seven thousand, one hundred fifty-seven".

Divisors: 1 23 701 3359 16123 77257 2354659 54157157