45637990 has 8 divisors (see below), whose sum is σ = 82148400. Its totient is φ = 18255192.

The previous prime is 45637951. The next prime is 45637993. The reversal of 45637990 is 9973654.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×45637990² = 4165652262480200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45637993) 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, 2281890 + ... + 2281909.

It is an arithmetic number, because the mean of its divisors is an integer number (10268550).

Almost surely, 2^45637990 is an apocalyptic number.

45637990 is a deficient number, since it is larger than the sum of its proper divisors (36510410).

45637990 is a wasteful number, since it uses less digits than its factorization.

45637990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4563806.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 45637990 is about 6755.5895375607. The cubic root of 45637990 is about 357.3623836636.

The spelling of 45637990 in words is "forty-five million, six hundred thirty-seven thousand, nine hundred ninety".