55798507 has 2 divisors, whose sum is σ = 55798508. Its totient is φ = 55798506.

The previous prime is 55798441. The next prime is 55798513. The reversal of 55798507 is 70589755.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55798507 is a prime.

It is a super-2 number, since 2×55798507² = 6226946766858098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55798597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27899253 + 27899254.

It is an arithmetic number, because the mean of its divisors is an integer number (27899254).

Almost surely, 2^55798507 is an apocalyptic number.

55798507 is a deficient number, since it is larger than the sum of its proper divisors (1).

55798507 is an equidigital number, since it uses as much as digits as its factorization.

55798507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 441000, while the sum is 46.

The square root of 55798507 is about 7469.8398242533. The cubic root of 55798507 is about 382.1268252993.

The spelling of 55798507 in words is "fifty-five million, seven hundred ninety-eight thousand, five hundred seven".