45977947 has 2 divisors, whose sum is σ = 45977948. Its totient is φ = 45977946.

The previous prime is 45977887. The next prime is 45977959. The reversal of 45977947 is 74977954.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45977947 is a prime.

It is a super-2 number, since 2×45977947² = 4227943220669618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45977894 and 45977903.

It is not a weakly prime, because it can be changed into another prime (45977747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22988973 + 22988974.

It is an arithmetic number, because the mean of its divisors is an integer number (22988974).

Almost surely, 2^45977947 is an apocalyptic number.

45977947 is a deficient number, since it is larger than the sum of its proper divisors (1).

45977947 is an equidigital number, since it uses as much as digits as its factorization.

45977947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2222640, while the sum is 52.

The square root of 45977947 is about 6780.7040194953. The cubic root of 45977947 is about 358.2475192861.

It can be divided in two parts, 4597 and 7947, that added together give a square (12544 = 112²).

The spelling of 45977947 in words is "forty-five million, nine hundred seventy-seven thousand, nine hundred forty-seven".