55485907 has 2 divisors, whose sum is σ = 55485908. Its totient is φ = 55485906.

The previous prime is 55485869. The next prime is 55485931. The reversal of 55485907 is 70958455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55485907 - 2¹¹ = 55483859 is a prime.

It is a super-2 number, since 2×55485907² = 6157371751225298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55485107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27742953 + 27742954.

It is an arithmetic number, because the mean of its divisors is an integer number (27742954).

Almost surely, 2^55485907 is an apocalyptic number.

55485907 is a deficient number, since it is larger than the sum of its proper divisors (1).

55485907 is an equidigital number, since it uses as much as digits as its factorization.

55485907 is an odious number, because the sum of its binary digits is odd.

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

The square root of 55485907 is about 7448.8862925943. The cubic root of 55485907 is about 381.4118921159.

The spelling of 55485907 in words is "fifty-five million, four hundred eighty-five thousand, nine hundred seven".