55932281 has 2 divisors, whose sum is σ = 55932282. Its totient is φ = 55932280.

The previous prime is 55932263. The next prime is 55932287. The reversal of 55932281 is 18223955.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30085225 + 25847056 = 5485^2 + 5084^2 .

It is a cyclic number.

It is not a de Polignac number, because 55932281 - 2¹⁴ = 55915897 is a prime.

It is a super-2 number, since 2×55932281² = 6256840115725922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55932287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27966140 + 27966141.

It is an arithmetic number, because the mean of its divisors is an integer number (27966141).

Almost surely, 2^55932281 is an apocalyptic number.

It is an amenable number.

55932281 is a deficient number, since it is larger than the sum of its proper divisors (1).

55932281 is an equidigital number, since it uses as much as digits as its factorization.

55932281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 35.

The square root of 55932281 is about 7478.7887388266. The cubic root of 55932281 is about 382.4319579369.

The spelling of 55932281 in words is "fifty-five million, nine hundred thirty-two thousand, two hundred eighty-one".