55612507 has 2 divisors, whose sum is σ = 55612508. Its totient is φ = 55612506.

The previous prime is 55612499. The next prime is 55612511. The reversal of 55612507 is 70521655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55612507 - 2³ = 55612499 is a prime.

It is not a weakly prime, because it can be changed into another prime (55612537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27806253 + 27806254.

It is an arithmetic number, because the mean of its divisors is an integer number (27806254).

Almost surely, 2^55612507 is an apocalyptic number.

55612507 is a deficient number, since it is larger than the sum of its proper divisors (1).

55612507 is an equidigital number, since it uses as much as digits as its factorization.

55612507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 55612507 is about 7457.3793654339. The cubic root of 55612507 is about 381.7017559149.

The spelling of 55612507 in words is "fifty-five million, six hundred twelve thousand, five hundred seven".