45138712 has 16 divisors (see below), whose sum is σ = 84722400. Its totient is φ = 22546080.

The previous prime is 45138707. The next prime is 45138713. The reversal of 45138712 is 21783154.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45138713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7537 + ... + 12127.

It is an arithmetic number, because the mean of its divisors is an integer number (5295150).

Almost surely, 2^45138712 is an apocalyptic number.

It is an amenable number.

45138712 is a deficient number, since it is larger than the sum of its proper divisors (39583688).

45138712 is a wasteful number, since it uses less digits than its factorization.

45138712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5826 (or 5822 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 45138712 is about 6718.5349593494. The cubic root of 45138712 is about 356.0544250419.

It can be divided in two parts, 4513 and 8712, that added together give a square (13225 = 115²).

The spelling of 45138712 in words is "forty-five million, one hundred thirty-eight thousand, seven hundred twelve".