54405396 has 36 divisors (see below), whose sum is σ = 143506272. Its totient is φ = 17346384.

The previous prime is 54405391. The next prime is 54405397. The reversal of 54405396 is 69350445.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×54405396² = 5919894227833632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 54405396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54405391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32026 + ... + 33681.

Almost surely, 2^54405396 is an apocalyptic number.

It is an amenable number.

54405396 is an abundant number, since it is smaller than the sum of its proper divisors (89100876).

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

54405396 is a wasteful number, since it uses less digits than its factorization.

54405396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65740 (or 65735 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 54405396 is about 7376.0013557482. The cubic root of 54405396 is about 378.9198225469.

It can be divided in two parts, 54 and 405396, that added together give a triangular number (405450 = T₉₀₀).

The spelling of 54405396 in words is "fifty-four million, four hundred five thousand, three hundred ninety-six".