45981954 has 12 divisors (see below), whose sum is σ = 99627606. Its totient is φ = 15327312.

The previous prime is 45981953. The next prime is 45981973. The reversal of 45981954 is 45918954.

45981954 is a `hidden beast` number, since 4 + 598 + 1 + 9 + 54 = 666.

It can be written as a sum of positive squares in only one way, i.e., 45198729 + 783225 = 6723^2 + 885^2 .

It is a super-2 number, since 2×45981954² = 4228680187316232, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45981953) by changing a digit.

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

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1277259 + ... + 1277294.

Almost surely, 2^45981954 is an apocalyptic number.

45981954 is an abundant number, since it is smaller than the sum of its proper divisors (53645652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45981954 is a wasteful number, since it uses less digits than its factorization.

45981954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554561 (or 2554558 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 45981954 is about 6780.9994838519. Note that the first 3 decimals coincide. The cubic root of 45981954 is about 358.2579261312.

Subtracting from 45981954 its product of digits (259200), we obtain a palindrome (45722754).

The spelling of 45981954 in words is "forty-five million, nine hundred eighty-one thousand, nine hundred fifty-four".