55612537 has 2 divisors, whose sum is σ = 55612538. Its totient is φ = 55612536.

The previous prime is 55612511. The next prime is 55612549. The reversal of 55612537 is 73521655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29203216 + 26409321 = 5404^2 + 5139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55612537 is a prime.

It is not a weakly prime, because it can be changed into another prime (55612507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27806268 + 27806269.

It is an arithmetic number, because the mean of its divisors is an integer number (27806269).

Almost surely, 2^55612537 is an apocalyptic number.

It is an amenable number.

55612537 is a deficient number, since it is larger than the sum of its proper divisors (1).

55612537 is an equidigital number, since it uses as much as digits as its factorization.

55612537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31500, while the sum is 34.

The square root of 55612537 is about 7457.3813768641. The cubic root of 55612537 is about 381.7018245508.

The spelling of 55612537 in words is "fifty-five million, six hundred twelve thousand, five hundred thirty-seven".