55159963 has 2 divisors, whose sum is σ = 55159964. Its totient is φ = 55159962.

The previous prime is 55159939. The next prime is 55159981. The reversal of 55159963 is 36995155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55159963 - 2¹³ = 55151771 is a prime.

It is a super-2 number, since 2×55159963² = 6085243036322738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55159913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27579981 + 27579982.

It is an arithmetic number, because the mean of its divisors is an integer number (27579982).

Almost surely, 2^55159963 is an apocalyptic number.

55159963 is a deficient number, since it is larger than the sum of its proper divisors (1).

55159963 is an equidigital number, since it uses as much as digits as its factorization.

55159963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 182250, while the sum is 43.

The square root of 55159963 is about 7426.9753601315. The cubic root of 55159963 is about 380.6635750910.

The spelling of 55159963 in words is "fifty-five million, one hundred fifty-nine thousand, nine hundred sixty-three".