45557761 has 2 divisors, whose sum is σ = 45557762. Its totient is φ = 45557760.

The previous prime is 45557747. The next prime is 45557777. The reversal of 45557761 is 16775554.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43970161 + 1587600 = 6631^2 + 1260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45557761 is a prime.

It is not a weakly prime, because it can be changed into another prime (45557741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22778880 + 22778881.

It is an arithmetic number, because the mean of its divisors is an integer number (22778881).

Almost surely, 2^45557761 is an apocalyptic number.

It is an amenable number.

45557761 is a deficient number, since it is larger than the sum of its proper divisors (1).

45557761 is an equidigital number, since it uses as much as digits as its factorization.

45557761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 147000, while the sum is 40.

The square root of 45557761 is about 6749.6489538346. The cubic root of 45557761 is about 357.1528532288.

The spelling of 45557761 in words is "forty-five million, five hundred fifty-seven thousand, seven hundred sixty-one".