45138534 has 32 divisors (see below), whose sum is σ = 104633856. Its totient is φ = 12714240.

The previous prime is 45138497. The next prime is 45138551. The reversal of 45138534 is 43583154.

It is a junction number, because it is equal to n+sod(n) for n = 45138495 and 45138504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4587 + ... + 10550.

It is an arithmetic number, because the mean of its divisors is an integer number (3269808).

Almost surely, 2^45138534 is an apocalyptic number.

45138534 is an abundant number, since it is smaller than the sum of its proper divisors (59495322).

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

45138534 is a wasteful number, since it uses less digits than its factorization.

45138534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15220.

The product of its digits is 28800, while the sum is 33.

The square root of 45138534 is about 6718.5217124007. The cubic root of 45138534 is about 356.0539570196.

The spelling of 45138534 in words is "forty-five million, one hundred thirty-eight thousand, five hundred thirty-four".