55515127 has 2 divisors, whose sum is σ = 55515128. Its totient is φ = 55515126.

The previous prime is 55515121. The next prime is 55515139. The reversal of 55515127 is 72151555.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55515127 is a prime.

It is a super-2 number, since 2×55515127² = 6163858651652258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55515121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27757563 + 27757564.

It is an arithmetic number, because the mean of its divisors is an integer number (27757564).

Almost surely, 2^55515127 is an apocalyptic number.

55515127 is a deficient number, since it is larger than the sum of its proper divisors (1).

55515127 is an equidigital number, since it uses as much as digits as its factorization.

55515127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8750, while the sum is 31.

The square root of 55515127 is about 7450.8474014705. The cubic root of 55515127 is about 381.4788334367.

The spelling of 55515127 in words is "fifty-five million, five hundred fifteen thousand, one hundred twenty-seven".