55357091 has 2 divisors, whose sum is σ = 55357092. Its totient is φ = 55357090.

The previous prime is 55357079. The next prime is 55357097. The reversal of 55357091 is 19075355.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55357091 - 2¹⁴ = 55340707 is a prime.

It is not a weakly prime, because it can be changed into another prime (55357097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27678545 + 27678546.

It is an arithmetic number, because the mean of its divisors is an integer number (27678546).

Almost surely, 2^55357091 is an apocalyptic number.

55357091 is a deficient number, since it is larger than the sum of its proper divisors (1).

55357091 is an equidigital number, since it uses as much as digits as its factorization.

55357091 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 55357091 is about 7440.2346065161. The cubic root of 55357091 is about 381.1165016428.

The spelling of 55357091 in words is "fifty-five million, three hundred fifty-seven thousand, ninety-one".