45191956 has 24 divisors (see below), whose sum is σ = 83472480. Its totient is φ = 21349152.

The previous prime is 45191953. The next prime is 45191959. The reversal of 45191956 is 65919154.

It is an interprime number because it is at equal distance from previous prime (45191953) and next prime (45191959).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45191953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44106 + ... + 45118.

It is an arithmetic number, because the mean of its divisors is an integer number (3478020).

Almost surely, 2^45191956 is an apocalyptic number.

It is an amenable number.

45191956 is a deficient number, since it is larger than the sum of its proper divisors (38280524).

45191956 is a wasteful number, since it uses less digits than its factorization.

45191956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623 (or 1621 counting only the distinct ones).

The product of its digits is 48600, while the sum is 40.

The square root of 45191956 is about 6722.4962625501. The cubic root of 45191956 is about 356.1943663612.

The spelling of 45191956 in words is "forty-five million, one hundred ninety-one thousand, nine hundred fifty-six".