45331551 has 12 divisors (see below), whose sum is σ = 68326128. Its totient is φ = 28906944.

The previous prime is 45331541. The next prime is 45331591. The reversal of 45331551 is 15513354.

It is not a de Polignac number, because 45331551 - 2⁶ = 45331487 is a prime.

It is a super-3 number, since 3×45331551³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45331541) 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, 109290 + ... + 109703.

It is an arithmetic number, because the mean of its divisors is an integer number (5693844).

Almost surely, 2^45331551 is an apocalyptic number.

45331551 is a deficient number, since it is larger than the sum of its proper divisors (22994577).

45331551 is a wasteful number, since it uses less digits than its factorization.

45331551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219022 (or 219019 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 45331551 is about 6732.8709329676. The cubic root of 45331551 is about 356.5607430918.

It can be divided in two parts, 4533 and 1551, that added together give a square (6084 = 78²).

The spelling of 45331551 in words is "forty-five million, three hundred thirty-one thousand, five hundred fifty-one".