45331309 has 2 divisors, whose sum is σ = 45331310. Its totient is φ = 45331308.

The previous prime is 45331303. The next prime is 45331339. The reversal of 45331309 is 90313354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44222500 + 1108809 = 6650^2 + 1053^2 .

It is a cyclic number.

It is not a de Polignac number, because 45331309 - 2⁵ = 45331277 is a prime.

It is a Chen prime.

It is equal to p_2737090 and since 45331309 and 2737090 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45331303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22665654 + 22665655.

It is an arithmetic number, because the mean of its divisors is an integer number (22665655).

Almost surely, 2^45331309 is an apocalyptic number.

It is an amenable number.

45331309 is a deficient number, since it is larger than the sum of its proper divisors (1).

45331309 is an equidigital number, since it uses as much as digits as its factorization.

45331309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 45331309 is about 6732.8529614124. The cubic root of 45331309 is about 356.5601085973.

The spelling of 45331309 in words is "forty-five million, three hundred thirty-one thousand, three hundred nine".