45721727 has 2 divisors, whose sum is σ = 45721728. Its totient is φ = 45721726.

The previous prime is 45721691. The next prime is 45721729. The reversal of 45721727 is 72712754.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45721727 - 2⁸ = 45721471 is a prime.

Together with 45721729, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45721729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22860863 + 22860864.

It is an arithmetic number, because the mean of its divisors is an integer number (22860864).

Almost surely, 2^45721727 is an apocalyptic number.

45721727 is a deficient number, since it is larger than the sum of its proper divisors (1).

45721727 is an equidigital number, since it uses as much as digits as its factorization.

45721727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27440, while the sum is 35.

The square root of 45721727 is about 6761.7843059358. The cubic root of 45721727 is about 357.5808140449.

The spelling of 45721727 in words is "forty-five million, seven hundred twenty-one thousand, seven hundred twenty-seven".