45167621 has 4 divisors (see below), whose sum is σ = 45512544. Its totient is φ = 44822700.

The previous prime is 45167599. The next prime is 45167719. The reversal of 45167621 is 12676154.

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.

It is a cyclic number.

It is not a de Polignac number, because 45167621 - 2¹⁴ = 45151237 is a prime.

It is a super-2 number, since 2×45167621² = 4080227973599282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45164621) 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, 172265 + ... + 172526.

It is an arithmetic number, because the mean of its divisors is an integer number (11378136).

Almost surely, 2^45167621 is an apocalyptic number.

It is an amenable number.

45167621 is a deficient number, since it is larger than the sum of its proper divisors (344923).

45167621 is a wasteful number, since it uses less digits than its factorization.

45167621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344922.

The product of its digits is 10080, while the sum is 32.

The square root of 45167621 is about 6720.6860512897. The cubic root of 45167621 is about 356.1304202744.

The spelling of 45167621 in words is "forty-five million, one hundred sixty-seven thousand, six hundred twenty-one".