55031403377 has 2 divisors, whose sum is σ = 55031403378. Its totient is φ = 55031403376.

The previous prime is 55031403373. The next prime is 55031403437. The reversal of 55031403377 is 77330413055.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46345908961 + 8685494416 = 215281^2 + 93196^2 .

It is a cyclic number.

It is not a de Polignac number, because 55031403377 - 2² = 55031403373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55031403377.

It is not a weakly prime, because it can be changed into another prime (55031403373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27515701688 + 27515701689.

It is an arithmetic number, because the mean of its divisors is an integer number (27515701689).

Almost surely, 2^55031403377 is an apocalyptic number.

It is an amenable number.

55031403377 is a deficient number, since it is larger than the sum of its proper divisors (1).

55031403377 is an equidigital number, since it uses as much as digits as its factorization.

55031403377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132300, while the sum is 38.

The spelling of 55031403377 in words is "fifty-five billion, thirty-one million, four hundred three thousand, three hundred seventy-seven".