54155515 has 8 divisors (see below), whose sum is σ = 66369600. Its totient is φ = 42402432.

The previous prime is 54155513. The next prime is 54155537. The reversal of 54155515 is 51555145.

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

It is a cyclic number.

It is not a de Polignac number, because 54155515 - 2¹ = 54155513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54155513) 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, 114990 + ... + 115459.

It is an arithmetic number, because the mean of its divisors is an integer number (8296200).

Almost surely, 2^54155515 is an apocalyptic number.

54155515 is a deficient number, since it is larger than the sum of its proper divisors (12214085).

54155515 is a wasteful number, since it uses less digits than its factorization.

54155515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230501.

The product of its digits is 12500, while the sum is 31.

The square root of 54155515 is about 7359.0430763789. The cubic root of 54155515 is about 378.3388128005.

The spelling of 54155515 in words is "fifty-four million, one hundred fifty-five thousand, five hundred fifteen".