45178871 has 4 divisors (see below), whose sum is σ = 45227232. Its totient is φ = 45130512.

The previous prime is 45178799. The next prime is 45178883. The reversal of 45178871 is 17887154.

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 45178871 - 2¹⁸ = 44916727 is a prime.

It is a super-2 number, since 2×45178871² = 4082260769669282, 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 (45171871) 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, 22751 + ... + 24656.

It is an arithmetic number, because the mean of its divisors is an integer number (11306808).

Almost surely, 2^45178871 is an apocalyptic number.

45178871 is a deficient number, since it is larger than the sum of its proper divisors (48361).

45178871 is an equidigital number, since it uses as much as digits as its factorization.

45178871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48360.

The product of its digits is 62720, while the sum is 41.

The square root of 45178871 is about 6721.5229673044. The cubic root of 45178871 is about 356.1599852190.

The spelling of 45178871 in words is "forty-five million, one hundred seventy-eight thousand, eight hundred seventy-one".