46105981 has 4 divisors (see below), whose sum is σ = 46243132. Its totient is φ = 45968832.

The previous prime is 46105973. The next prime is 46105991. The reversal of 46105981 is 18950164.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23921881 + 22184100 = 4891^2 + 4710^2 .

It is a cyclic number.

It is not a de Polignac number, because 46105981 - 2³ = 46105973 is a prime.

It is a super-2 number, since 2×46105981² = 4251522967944722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46105991) 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 3 ways as a sum of consecutive naturals, for example, 68070 + ... + 68743.

It is an arithmetic number, because the mean of its divisors is an integer number (11560783).

Almost surely, 2^46105981 is an apocalyptic number.

It is an amenable number.

46105981 is a deficient number, since it is larger than the sum of its proper divisors (137151).

46105981 is a wasteful number, since it uses less digits than its factorization.

46105981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137150.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 46105981 is about 6790.1385111056. The cubic root of 46105981 is about 358.5797463341.

The spelling of 46105981 in words is "forty-six million, one hundred five thousand, nine hundred eighty-one".