55407532 has 6 divisors (see below), whose sum is σ = 96963188. Its totient is φ = 27703764.

The previous prime is 55407503. The next prime is 55407533. The reversal of 55407532 is 23570455.

It is a junction number, because it is equal to n+sod(n) for n = 55407494 and 55407503.

It is not an unprimeable number, because it can be changed into a prime (55407533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6925938 + ... + 6925945.

Almost surely, 2^55407532 is an apocalyptic number.

It is an amenable number.

55407532 is a deficient number, since it is larger than the sum of its proper divisors (41555656).

55407532 is a wasteful number, since it uses less digits than its factorization.

55407532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13851887 (or 13851885 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 55407532 is about 7443.6235799508. The cubic root of 55407532 is about 381.2322234119.

Adding to 55407532 its reverse (23570455), we get a palindrome (78977987).

The spelling of 55407532 in words is "fifty-five million, four hundred seven thousand, five hundred thirty-two".