45251523 has 12 divisors (see below), whose sum is σ = 66883960. Its totient is φ = 29465856.

The previous prime is 45251519. The next prime is 45251533. The reversal of 45251523 is 32515254.

It is a happy number.

It is not a de Polignac number, because 45251523 - 2² = 45251519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45251533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58078 + ... + 58851.

Almost surely, 2^45251523 is an apocalyptic number.

45251523 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

45251523 is a deficient number, since it is larger than the sum of its proper divisors (21632437).

45251523 is a wasteful number, since it uses less digits than its factorization.

45251523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116978 (or 116975 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 45251523 is about 6726.9252262828. The cubic root of 45251523 is about 356.3507962244.

Adding to 45251523 its reverse (32515254), we get a palindrome (77766777).

The spelling of 45251523 in words is "forty-five million, two hundred fifty-one thousand, five hundred twenty-three".