55377496397 has 2 divisors, whose sum is σ = 55377496398. Its totient is φ = 55377496396.

The previous prime is 55377496357. The next prime is 55377496403. The reversal of 55377496397 is 79369477355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54375710596 + 1001785801 = 233186^2 + 31651^2 .

It is a cyclic number.

It is not a de Polignac number, because 55377496397 - 2²⁶ = 55310387533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55377496337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27688748198 + 27688748199.

It is an arithmetic number, because the mean of its divisors is an integer number (27688748199).

Almost surely, 2^55377496397 is an apocalyptic number.

It is an amenable number.

55377496397 is a deficient number, since it is larger than the sum of its proper divisors (1).

55377496397 is an equidigital number, since it uses as much as digits as its factorization.

55377496397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150028200, while the sum is 65.

The spelling of 55377496397 in words is "fifty-five billion, three hundred seventy-seven million, four hundred ninety-six thousand, three hundred ninety-seven".