55331963 has 2 divisors, whose sum is σ = 55331964. Its totient is φ = 55331962.

The previous prime is 55331959. The next prime is 55332031. The reversal of 55331963 is 36913355.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55331963 - 2² = 55331959 is a prime.

It is a super-2 number, since 2×55331963² = 6123252258866738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55331663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27665981 + 27665982.

It is an arithmetic number, because the mean of its divisors is an integer number (27665982).

Almost surely, 2^55331963 is an apocalyptic number.

55331963 is a deficient number, since it is larger than the sum of its proper divisors (1).

55331963 is an equidigital number, since it uses as much as digits as its factorization.

55331963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36450, while the sum is 35.

The square root of 55331963 is about 7438.5457584127. The cubic root of 55331963 is about 381.0588267380.

The spelling of 55331963 in words is "fifty-five million, three hundred thirty-one thousand, nine hundred sixty-three".