55409652 has 36 divisors (see below), whose sum is σ = 141843520. Its totient is φ = 18235152.

The previous prime is 55409639. The next prime is 55409657. The reversal of 55409652 is 25690455.

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

It is a super-2 number, since 2×55409652² = 6140459069522208, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55409657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6898 + ... + 12585.

Almost surely, 2^55409652 is an apocalyptic number.

It is an amenable number.

55409652 is an abundant number, since it is smaller than the sum of its proper divisors (86433868).

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

55409652 is a wasteful number, since it uses less digits than its factorization.

55409652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19572 (or 19567 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 55409652 is about 7443.7659823506. The cubic root of 55409652 is about 381.2370855788.

The spelling of 55409652 in words is "fifty-five million, four hundred nine thousand, six hundred fifty-two".