55613797 has 2 divisors, whose sum is σ = 55613798. Its totient is φ = 55613796.

The previous prime is 55613773. The next prime is 55613821. The reversal of 55613797 is 79731655.

It is a balanced prime because it is at equal distance from previous prime (55613773) and next prime (55613821).

It can be written as a sum of positive squares in only one way, i.e., 52794756 + 2819041 = 7266^2 + 1679^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55613797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55613197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27806898 + 27806899.

It is an arithmetic number, because the mean of its divisors is an integer number (27806899).

Almost surely, 2^55613797 is an apocalyptic number.

It is an amenable number.

55613797 is a deficient number, since it is larger than the sum of its proper divisors (1).

55613797 is an equidigital number, since it uses as much as digits as its factorization.

55613797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 198450, while the sum is 43.

The square root of 55613797 is about 7457.4658564421. The cubic root of 55613797 is about 381.7047072381.

The spelling of 55613797 in words is "fifty-five million, six hundred thirteen thousand, seven hundred ninety-seven".