45156541 has 4 divisors (see below), whose sum is σ = 45237312. Its totient is φ = 45075772.

The previous prime is 45156533. The next prime is 45156557. The reversal of 45156541 is 14565154.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14565154 = 2 ⋅7282577.

It is a cyclic number.

It is not a de Polignac number, because 45156541 - 2³ = 45156533 is a prime.

It is a super-2 number, since 2×45156541² = 4078226390169362, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45156511) 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, 39541 + ... + 40666.

It is an arithmetic number, because the mean of its divisors is an integer number (11309328).

Almost surely, 2^45156541 is an apocalyptic number.

It is an amenable number.

45156541 is a deficient number, since it is larger than the sum of its proper divisors (80771).

45156541 is an equidigital number, since it uses as much as digits as its factorization.

45156541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80770.

The product of its digits is 12000, while the sum is 31.

The square root of 45156541 is about 6719.8616801241. The cubic root of 45156541 is about 356.1012972901.

The spelling of 45156541 in words is "forty-five million, one hundred fifty-six thousand, five hundred forty-one".