45139258 has 8 divisors (see below), whose sum is σ = 68636628. Its totient is φ = 22260384.

The previous prime is 45139253. The next prime is 45139273. The reversal of 45139258 is 85293154.

It can be written as a sum of positive squares in 2 ways, for example, as 40615129 + 4524129 = 6373^2 + 2127^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×45139258² = 4075105225581128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45139253) 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, 154441 + ... + 154732.

Almost surely, 2^45139258 is an apocalyptic number.

45139258 is a deficient number, since it is larger than the sum of its proper divisors (23497370).

45139258 is a wasteful number, since it uses less digits than its factorization.

45139258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309248.

The product of its digits is 43200, while the sum is 37.

The square root of 45139258 is about 6718.5755930852. The cubic root of 45139258 is about 356.0558606532.

The spelling of 45139258 in words is "forty-five million, one hundred thirty-nine thousand, two hundred fifty-eight".