45500991 has 8 divisors (see below), whose sum is σ = 63861120. Its totient is φ = 28737432.

The previous prime is 45500929. The next prime is 45501011. The reversal of 45500991 is 19900554.

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

It is not a de Polignac number, because 45500991 - 2¹⁰ = 45499967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45501991) 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, 399075 + ... + 399188.

It is an arithmetic number, because the mean of its divisors is an integer number (7982640).

Almost surely, 2^45500991 is an apocalyptic number.

45500991 is a deficient number, since it is larger than the sum of its proper divisors (18360129).

45500991 is a wasteful number, since it uses less digits than its factorization.

45500991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798285.

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 45500991 is about 6745.4422390233. The cubic root of 45500991 is about 357.0044409368.

The spelling of 45500991 in words is "forty-five million, five hundred thousand, nine hundred ninety-one".