55340587 has 2 divisors, whose sum is σ = 55340588. Its totient is φ = 55340586.

The previous prime is 55340543. The next prime is 55340617. The reversal of 55340587 is 78504355.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55340587 - 2²³ = 46951979 is a prime.

It is not a weakly prime, because it can be changed into another prime (55340387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27670293 + 27670294.

It is an arithmetic number, because the mean of its divisors is an integer number (27670294).

Almost surely, 2^55340587 is an apocalyptic number.

55340587 is a deficient number, since it is larger than the sum of its proper divisors (1).

55340587 is an equidigital number, since it uses as much as digits as its factorization.

55340587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 55340587 is about 7439.1254190261. The cubic root of 55340587 is about 381.0786228946.

The spelling of 55340587 in words is "fifty-five million, three hundred forty thousand, five hundred eighty-seven".