45001831 has 4 divisors (see below), whose sum is σ = 51430672. Its totient is φ = 38572992.

The previous prime is 45001829. The next prime is 45001841. The reversal of 45001831 is 13810054.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13810054 = 2 ⋅6905027.

It is a cyclic number.

It is not a de Polignac number, because 45001831 - 2¹ = 45001829 is a prime.

It is a super-2 number, since 2×45001831² = 4050329586705122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45001841) 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, 3214410 + ... + 3214423.

It is an arithmetic number, because the mean of its divisors is an integer number (12857668).

Almost surely, 2^45001831 is an apocalyptic number.

45001831 is a deficient number, since it is larger than the sum of its proper divisors (6428841).

45001831 is an equidigital number, since it uses as much as digits as its factorization.

45001831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6428840.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 45001831 is about 6708.3404057934. The cubic root of 45001831 is about 355.6941545848.

Adding to 45001831 its reverse (13810054), we get a palindrome (58811885).

The spelling of 45001831 in words is "forty-five million, one thousand, eight hundred thirty-one".