45981951 has 8 divisors (see below), whose sum is σ = 62804784. Its totient is φ = 29906880.

The previous prime is 45981941. The next prime is 45981953. The reversal of 45981951 is 15918954.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45981951 - 2¹⁰ = 45980927 is a prime.

It is a super-2 number, since 2×45981951² = 4228679635532802, which contains 22 as substring.

It is a congruent 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186796 + ... + 187041.

It is an arithmetic number, because the mean of its divisors is an integer number (7850598).

Almost surely, 2^45981951 is an apocalyptic number.

45981951 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

45981951 is a deficient number, since it is larger than the sum of its proper divisors (16822833).

45981951 is a wasteful number, since it uses less digits than its factorization.

45981951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373881.

The product of its digits is 64800, while the sum is 42.

The square root of 45981951 is about 6780.9992626456. Note that the first 3 decimals coincide. The cubic root of 45981951 is about 358.2579183399.

The spelling of 45981951 in words is "forty-five million, nine hundred eighty-one thousand, nine hundred fifty-one".