55402432 has 28 divisors (see below), whose sum is σ = 110221776. Its totient is φ = 27630080.

The previous prime is 55402429. The next prime is 55402453. The reversal of 55402432 is 23420455.

It is a junction number, because it is equal to n+sod(n) for n = 55402397 and 55402406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31332 + ... + 33052.

It is an arithmetic number, because the mean of its divisors is an integer number (3936492).

Almost surely, 2^55402432 is an apocalyptic number.

It is an amenable number.

55402432 is a deficient number, since it is larger than the sum of its proper divisors (54819344).

55402432 is a wasteful number, since it uses less digits than its factorization.

55402432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236 (or 2226 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 55402432 is about 7443.2809969798. The cubic root of 55402432 is about 381.2205261816.

Adding to 55402432 its reverse (23420455), we get a palindrome (78822887).

The spelling of 55402432 in words is "fifty-five million, four hundred two thousand, four hundred thirty-two".