55938761 has 2 divisors, whose sum is σ = 55938762. Its totient is φ = 55938760.

The previous prime is 55938739. The next prime is 55938791. The reversal of 55938761 is 16783955.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55413136 + 525625 = 7444^2 + 725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55938761 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55938791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27969380 + 27969381.

It is an arithmetic number, because the mean of its divisors is an integer number (27969381).

Almost surely, 2^55938761 is an apocalyptic number.

It is an amenable number.

55938761 is a deficient number, since it is larger than the sum of its proper divisors (1).

55938761 is an equidigital number, since it uses as much as digits as its factorization.

55938761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 44.

The square root of 55938761 is about 7479.2219515134. The cubic root of 55938761 is about 382.4467261730.

The spelling of 55938761 in words is "fifty-five million, nine hundred thirty-eight thousand, seven hundred sixty-one".