45427931 has 2 divisors, whose sum is σ = 45427932. Its totient is φ = 45427930.

The previous prime is 45427903. The next prime is 45427933. The reversal of 45427931 is 13972454.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45427931 is a prime.

It is a super-2 number, since 2×45427931² = 4127393829881522, which contains 22 as substring.

Together with 45427933, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 45427891 and 45427900.

It is not a weakly prime, because it can be changed into another prime (45427933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22713965 + 22713966.

It is an arithmetic number, because the mean of its divisors is an integer number (22713966).

Almost surely, 2^45427931 is an apocalyptic number.

45427931 is a deficient number, since it is larger than the sum of its proper divisors (1).

45427931 is an equidigital number, since it uses as much as digits as its factorization.

45427931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

The square root of 45427931 is about 6740.0245548514. The cubic root of 45427931 is about 356.8132603602.

The spelling of 45427931 in words is "forty-five million, four hundred twenty-seven thousand, nine hundred thirty-one".