45631553 has 16 divisors (see below), whose sum is σ = 52980480. Its totient is φ = 38841600.

The previous prime is 45631543. The next prime is 45631561. The reversal of 45631553 is 35513654.

It is not a de Polignac number, because 45631553 - 2²⁰ = 44582977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45631543) 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, 44183 + ... + 45203.

It is an arithmetic number, because the mean of its divisors is an integer number (3311280).

Almost surely, 2^45631553 is an apocalyptic number.

It is an amenable number.

45631553 is a deficient number, since it is larger than the sum of its proper divisors (7348927).

45631553 is a wasteful number, since it uses less digits than its factorization.

45631553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288.

The product of its digits is 27000, while the sum is 32.

The square root of 45631553 is about 6755.1131004595. The cubic root of 45631553 is about 357.3455815081.

It can be divided in two parts, 4563 and 1553, that added together give a palindrome (6116).

The spelling of 45631553 in words is "forty-five million, six hundred thirty-one thousand, five hundred fifty-three".