45431397 has 24 divisors (see below), whose sum is σ = 72772128. Its totient is φ = 27079200.

The previous prime is 45431389. The next prime is 45431401. The reversal of 45431397 is 79313454.

It is not a de Polignac number, because 45431397 - 2³ = 45431389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45431317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2278 + ... + 9800.

It is an arithmetic number, because the mean of its divisors is an integer number (3032172).

Almost surely, 2^45431397 is an apocalyptic number.

It is an amenable number.

45431397 is a deficient number, since it is larger than the sum of its proper divisors (27340731).

45431397 is a wasteful number, since it uses less digits than its factorization.

45431397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7601 (or 7598 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 45431397 is about 6740.2816706722. The cubic root of 45431397 is about 356.8223346843.

The spelling of 45431397 in words is "forty-five million, four hundred thirty-one thousand, three hundred ninety-seven".