45155023 has 4 divisors (see below), whose sum is σ = 45300528. Its totient is φ = 45009520.

The previous prime is 45155021. The next prime is 45155041. The reversal of 45155023 is 32055154.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45155023 - 2¹ = 45155021 is a prime.

It is a super-2 number, since 2×45155023² = 4077952204261058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45155021) 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, 72286 + ... + 72907.

It is an arithmetic number, because the mean of its divisors is an integer number (11325132).

Almost surely, 2^45155023 is an apocalyptic number.

45155023 is a deficient number, since it is larger than the sum of its proper divisors (145505).

45155023 is a wasteful number, since it uses less digits than its factorization.

45155023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145504.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 45155023 is about 6719.7487304214. The cubic root of 45155023 is about 356.0973069650.

The spelling of 45155023 in words is "forty-five million, one hundred fifty-five thousand, twenty-three".