45251237 has 8 divisors (see below), whose sum is σ = 45740376. Its totient is φ = 44764672.

The previous prime is 45251231. The next prime is 45251257. The reversal of 45251237 is 73215254.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2819041 + 42432196 = 1679^2 + 6514^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45251237 - 2⁴ = 45251221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45251231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76013 + ... + 76605.

It is an arithmetic number, because the mean of its divisors is an integer number (5717547).

Almost surely, 2^45251237 is an apocalyptic number.

It is an amenable number.

45251237 is a deficient number, since it is larger than the sum of its proper divisors (489139).

45251237 is a wasteful number, since it uses less digits than its factorization.

45251237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287.

The product of its digits is 8400, while the sum is 29.

The square root of 45251237 is about 6726.9039683944. The cubic root of 45251237 is about 356.3500454833.

The spelling of 45251237 in words is "forty-five million, two hundred fifty-one thousand, two hundred thirty-seven".