55071624 has 32 divisors (see below), whose sum is σ = 142122240. Its totient is φ = 17764800.

The previous prime is 55071613. The next prime is 55071631. The reversal of 55071624 is 42617055.

It is a junction number, because it is equal to n+sod(n) for n = 55071591 and 55071600.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36267 + ... + 37754.

It is an arithmetic number, because the mean of its divisors is an integer number (4441320).

Almost surely, 2^55071624 is an apocalyptic number.

It is an amenable number.

55071624 is an abundant number, since it is smaller than the sum of its proper divisors (87050616).

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

55071624 is a wasteful number, since it uses less digits than its factorization.

55071624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74061 (or 74057 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 55071624 is about 7421.0258051027. The cubic root of 55071624 is about 380.4602548733.

Adding to 55071624 its reverse (42617055), we get a palindrome (97688679).

The spelling of 55071624 in words is "fifty-five million, seventy-one thousand, six hundred twenty-four".