55357331 has 2 divisors, whose sum is σ = 55357332. Its totient is φ = 55357330.

The previous prime is 55357301. The next prime is 55357349. The reversal of 55357331 is 13375355.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55357331 - 2¹⁴ = 55340947 is a prime.

It is a super-2 number, since 2×55357331² = 6128868190887122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55357301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27678665 + 27678666.

It is an arithmetic number, because the mean of its divisors is an integer number (27678666).

Almost surely, 2^55357331 is an apocalyptic number.

55357331 is a deficient number, since it is larger than the sum of its proper divisors (1).

55357331 is an equidigital number, since it uses as much as digits as its factorization.

55357331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23625, while the sum is 32.

The square root of 55357331 is about 7440.2507350223. The cubic root of 55357331 is about 381.1170524173.

The spelling of 55357331 in words is "fifty-five million, three hundred fifty-seven thousand, three hundred thirty-one".