54645290 has 24 divisors (see below), whose sum is σ = 114421572. Its totient is φ = 18735360.

The previous prime is 54645289. The next prime is 54645301. The reversal of 54645290 is 9254645.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54125449 + 519841 = 7357^2 + 721^2 .

It is a super-2 number, since 2×54645290² = 5972215438368200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 54645290.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55271 + ... + 56250.

Almost surely, 2^54645290 is an apocalyptic number.

54645290 is an abundant number, since it is smaller than the sum of its proper divisors (59776282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54645290 is a wasteful number, since it uses less digits than its factorization.

54645290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111542 (or 111535 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 54645290 is about 7392.2452610827. The cubic root of 54645290 is about 379.4759396472.

The spelling of 54645290 in words is "fifty-four million, six hundred forty-five thousand, two hundred ninety".