55732661 has 2 divisors, whose sum is σ = 55732662. Its totient is φ = 55732660.

The previous prime is 55732631. The next prime is 55732667. The reversal of 55732661 is 16623755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44809636 + 10923025 = 6694^2 + 3305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55732661 is a prime.

It is a super-2 number, since 2×55732661² = 6212259004281842, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55732667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27866330 + 27866331.

It is an arithmetic number, because the mean of its divisors is an integer number (27866331).

Almost surely, 2^55732661 is an apocalyptic number.

It is an amenable number.

55732661 is a deficient number, since it is larger than the sum of its proper divisors (1).

55732661 is an equidigital number, since it uses as much as digits as its factorization.

55732661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 35.

The square root of 55732661 is about 7465.4310659198. The cubic root of 55732661 is about 381.9764543294.

The spelling of 55732661 in words is "fifty-five million, seven hundred thirty-two thousand, six hundred sixty-one".