45251723 has 16 divisors (see below), whose sum is σ = 51397632. Its totient is φ = 39468000.

The previous prime is 45251719. The next prime is 45251729. The reversal of 45251723 is 32715254.

It is a happy number.

It is not a de Polignac number, because 45251723 - 2² = 45251719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45251729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44165 + ... + 45177.

It is an arithmetic number, because the mean of its divisors is an integer number (3212352).

Almost surely, 2^45251723 is an apocalyptic number.

45251723 is a deficient number, since it is larger than the sum of its proper divisors (6145909).

45251723 is a wasteful number, since it uses less digits than its factorization.

45251723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186.

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

The square root of 45251723 is about 6726.9400918991. The cubic root of 45251723 is about 356.3513212164.

Adding to 45251723 its reverse (32715254), we get a palindrome (77966977).

The spelling of 45251723 in words is "forty-five million, two hundred fifty-one thousand, seven hundred twenty-three".