55501156387 has 2 divisors, whose sum is σ = 55501156388. Its totient is φ = 55501156386.

The previous prime is 55501156369. The next prime is 55501156397. The reversal of 55501156387 is 78365110555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55501156387 - 2²³ = 55492767779 is a prime.

It is not a weakly prime, because it can be changed into another prime (55501156397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27750578193 + 27750578194.

It is an arithmetic number, because the mean of its divisors is an integer number (27750578194).

Almost surely, 2^55501156387 is an apocalyptic number.

55501156387 is a deficient number, since it is larger than the sum of its proper divisors (1).

55501156387 is an equidigital number, since it uses as much as digits as its factorization.

55501156387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630000, while the sum is 46.

The spelling of 55501156387 in words is "fifty-five billion, five hundred one million, one hundred fifty-six thousand, three hundred eighty-seven".