45031550 has 24 divisors (see below), whose sum is σ = 84275856. Its totient is φ = 17901440.

The previous prime is 45031549. The next prime is 45031559. The reversal of 45031550 is 5513054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45031559) 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, 5654 + ... + 11046.

It is an arithmetic number, because the mean of its divisors is an integer number (3511494).

Almost surely, 2^45031550 is an apocalyptic number.

45031550 is a deficient number, since it is larger than the sum of its proper divisors (39244306).

45031550 is a wasteful number, since it uses less digits than its factorization.

45031550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5572 (or 5567 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 45031550 is about 6710.5551186172. Note that the first 3 decimals coincide. The cubic root of 45031550 is about 355.7724369436.

The spelling of 45031550 in words is "forty-five million, thirty-one thousand, five hundred fifty".