55437657277157 has 2 divisors, whose sum is σ = 55437657277158. Its totient is φ = 55437657277156.

The previous prime is 55437657277153. The next prime is 55437657277183. The reversal of 55437657277157 is 75177275673455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55325495248321 + 112162028836 = 7438111^2 + 334906^2 .

It is a cyclic number.

It is not a de Polignac number, because 55437657277157 - 2² = 55437657277153 is a prime.

It is a super-2 number, since 2×55437657277157² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55437657277153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27718828638578 + 27718828638579.

It is an arithmetic number, because the mean of its divisors is an integer number (27718828638579).

Almost surely, 2^{55437657277157} is an apocalyptic number.

It is an amenable number.

55437657277157 is a deficient number, since it is larger than the sum of its proper divisors (1).

55437657277157 is an equidigital number, since it uses as much as digits as its factorization.

55437657277157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512630000, while the sum is 71.

The spelling of 55437657277157 in words is "fifty-five trillion, four hundred thirty-seven billion, six hundred fifty-seven million, two hundred seventy-seven thousand, one hundred fifty-seven".