45164551 has 4 divisors (see below), whose sum is σ = 46621504. Its totient is φ = 43707600.

The previous prime is 45164527. The next prime is 45164569. The reversal of 45164551 is 15546154.

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 45164551 - 2⁵ = 45164519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 1456921 = 45164551 / (4 + 5 + 1 + 6 + 4 + 5 + 5 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45164351) 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, 728430 + ... + 728491.

It is an arithmetic number, because the mean of its divisors is an integer number (11655376).

Almost surely, 2^45164551 is an apocalyptic number.

45164551 is a deficient number, since it is larger than the sum of its proper divisors (1456953).

45164551 is a wasteful number, since it uses less digits than its factorization.

45164551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456952.

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

The square root of 45164551 is about 6720.4576481070. The cubic root of 45164551 is about 356.1223514769.

The spelling of 45164551 in words is "forty-five million, one hundred sixty-four thousand, five hundred fifty-one".