55097513 has 2 divisors, whose sum is σ = 55097514. Its totient is φ = 55097512.

The previous prime is 55097479. The next prime is 55097519. The reversal of 55097513 is 31579055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46963609 + 8133904 = 6853^2 + 2852^2 .

It is a cyclic number.

It is not a de Polignac number, because 55097513 - 2⁸ = 55097257 is a prime.

It is not a weakly prime, because it can be changed into another prime (55097519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27548756 + 27548757.

It is an arithmetic number, because the mean of its divisors is an integer number (27548757).

Almost surely, 2^55097513 is an apocalyptic number.

It is an amenable number.

55097513 is a deficient number, since it is larger than the sum of its proper divisors (1).

55097513 is an equidigital number, since it uses as much as digits as its factorization.

55097513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23625, while the sum is 35.

The square root of 55097513 is about 7422.7699007850. The cubic root of 55097513 is about 380.5198632632.

The spelling of 55097513 in words is "fifty-five million, ninety-seven thousand, five hundred thirteen".