45371257 has 4 divisors (see below), whose sum is σ = 45417060. Its totient is φ = 45325456.

The previous prime is 45371243. The next prime is 45371279. The reversal of 45371257 is 75217354.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 962361 + 44408896 = 981^2 + 6664^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45371257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45371237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21382 + ... + 23407.

It is an arithmetic number, because the mean of its divisors is an integer number (11354265).

Almost surely, 2^45371257 is an apocalyptic number.

It is an amenable number.

45371257 is a deficient number, since it is larger than the sum of its proper divisors (45803).

45371257 is a wasteful number, since it uses less digits than its factorization.

45371257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45802.

The product of its digits is 29400, while the sum is 34.

The square root of 45371257 is about 6735.8189554055. The cubic root of 45371257 is about 356.6648168109.

The spelling of 45371257 in words is "forty-five million, three hundred seventy-one thousand, two hundred fifty-seven".