54901021 has 6 divisors (see below), whose sum is σ = 63864510. Its totient is φ = 47057976.

The previous prime is 54901019. The next prime is 54901027. The reversal of 54901021 is 12010945.

It can be written as a sum of positive squares in only one way, i.e., 38812900 + 16088121 = 6230^2 + 4011^2 .

It is not a de Polignac number, because 54901021 - 2¹ = 54901019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54900983 and 54901001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54901027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 560166 + ... + 560263.

It is an arithmetic number, because the mean of its divisors is an integer number (10644085).

Almost surely, 2^54901021 is an apocalyptic number.

It is an amenable number.

54901021 is a deficient number, since it is larger than the sum of its proper divisors (8963489).

54901021 is a wasteful number, since it uses less digits than its factorization.

54901021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120443 (or 1120436 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 54901021 is about 7409.5223192862. The cubic root of 54901021 is about 380.0669803445.

Adding to 54901021 its reverse (12010945), we get a palindrome (66911966).

The spelling of 54901021 in words is "fifty-four million, nine hundred one thousand, twenty-one".