45311791 has 16 divisors (see below), whose sum is σ = 53614656. Its totient is φ = 37483776.

The previous prime is 45311779. The next prime is 45311803. The reversal of 45311791 is 19711354.

It is an interprime number because it is at equal distance from previous prime (45311779) and next prime (45311803).

It is a cyclic number.

It is not a de Polignac number, because 45311791 - 2¹⁵ = 45279023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45311701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34845 + ... + 36121.

It is an arithmetic number, because the mean of its divisors is an integer number (3350916).

Almost surely, 2^45311791 is an apocalyptic number.

45311791 is a deficient number, since it is larger than the sum of its proper divisors (8302865).

45311791 is a wasteful number, since it uses less digits than its factorization.

45311791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458.

The product of its digits is 3780, while the sum is 31.

The square root of 45311791 is about 6731.4033455142. The cubic root of 45311791 is about 356.5089273468.

The spelling of 45311791 in words is "forty-five million, three hundred eleven thousand, seven hundred ninety-one".