55940587 has 2 divisors, whose sum is σ = 55940588. Its totient is φ = 55940586.

The previous prime is 55940581. The next prime is 55940609. The reversal of 55940587 is 78504955.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55940587 - 2¹⁹ = 55416299 is a prime.

It is not a weakly prime, because it can be changed into another prime (55940581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27970293 + 27970294.

It is an arithmetic number, because the mean of its divisors is an integer number (27970294).

Almost surely, 2^55940587 is an apocalyptic number.

55940587 is a deficient number, since it is larger than the sum of its proper divisors (1).

55940587 is an equidigital number, since it uses as much as digits as its factorization.

55940587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252000, while the sum is 43.

The square root of 55940587 is about 7479.3440220383. The cubic root of 55940587 is about 382.4508875101.

The spelling of 55940587 in words is "fifty-five million, nine hundred forty thousand, five hundred eighty-seven".