45554991 has 8 divisors (see below), whose sum is σ = 60861360. Its totient is φ = 30309312.

The previous prime is 45554987. The next prime is 45555023. The reversal of 45554991 is 19945554.

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

It is not a de Polignac number, because 45554991 - 2² = 45554987 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45554921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13390 + ... + 16443.

It is an arithmetic number, because the mean of its divisors is an integer number (7607670).

Almost surely, 2^45554991 is an apocalyptic number.

45554991 is a deficient number, since it is larger than the sum of its proper divisors (15306369).

45554991 is a wasteful number, since it uses less digits than its factorization.

45554991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30345.

The product of its digits is 162000, while the sum is 42.

The square root of 45554991 is about 6749.4437548586. The cubic root of 45554991 is about 357.1456145539.

The spelling of 45554991 in words is "forty-five million, five hundred fifty-four thousand, nine hundred ninety-one".