45820881 has 12 divisors (see below), whose sum is σ = 66310608. Its totient is φ = 30489624.

The previous prime is 45820871. The next prime is 45820891. The reversal of 45820881 is 18802854.

It is an interprime number because it is at equal distance from previous prime (45820871) and next prime (45820891).

It is a de Polignac number, because none of the positive numbers 2^k-45820881 is a prime.

It is a super-2 number, since 2×45820881² = 4199106271232322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45820811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 546 + ... + 9588.

It is an arithmetic number, because the mean of its divisors is an integer number (5525884).

Almost surely, 2^45820881 is an apocalyptic number.

It is an amenable number.

45820881 is a deficient number, since it is larger than the sum of its proper divisors (20489727).

45820881 is a wasteful number, since it uses less digits than its factorization.

45820881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9612 (or 9609 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 45820881 is about 6769.1122756237. The cubic root of 45820881 is about 357.8391155211.

The spelling of 45820881 in words is "forty-five million, eight hundred twenty thousand, eight hundred eighty-one".