55715089 has 2 divisors, whose sum is σ = 55715090. Its totient is φ = 55715088.

The previous prime is 55715071. The next prime is 55715113. The reversal of 55715089 is 98051755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30162064 + 25553025 = 5492^2 + 5055^2 .

It is a cyclic number.

It is not a de Polignac number, because 55715089 - 2⁷ = 55714961 is a prime.

It is a super-2 number, since 2×55715089² = 6208342284555842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55715189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27857544 + 27857545.

It is an arithmetic number, because the mean of its divisors is an integer number (27857545).

Almost surely, 2^55715089 is an apocalyptic number.

It is an amenable number.

55715089 is a deficient number, since it is larger than the sum of its proper divisors (1).

55715089 is an equidigital number, since it uses as much as digits as its factorization.

55715089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 40.

The square root of 55715089 is about 7464.2540819562. The cubic root of 55715089 is about 381.9363055448.

The spelling of 55715089 in words is "fifty-five million, seven hundred fifteen thousand, eighty-nine".