45138496 has 56 divisors (see below), whose sum is σ = 97292160. Its totient is φ = 20654592.

The previous prime is 45138493. The next prime is 45138497. The reversal of 45138496 is 69483154.

It is a super-2 number, since 2×45138496² = 4074967642284032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45138493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188745 + ... + 188983.

It is an arithmetic number, because the mean of its divisors is an integer number (1737360).

Almost surely, 2^45138496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45138496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48646080).

45138496 is an abundant number, since it is smaller than the sum of its proper divisors (52153664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45138496 is a wasteful number, since it uses less digits than its factorization.

45138496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 481 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 45138496 is about 6718.5188843971. The cubic root of 45138496 is about 356.0538571046.

The spelling of 45138496 in words is "forty-five million, one hundred thirty-eight thousand, four hundred ninety-six".