46021781 has 16 divisors (see below), whose sum is σ = 54445440. Its totient is φ = 38491200.

The previous prime is 46021777. The next prime is 46021793. The reversal of 46021781 is 18712064.

It is a cyclic number.

It is not a de Polignac number, because 46021781 - 2² = 46021777 is a prime.

It is a super-2 number, since 2×46021781² = 4236008652823922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46021751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1631 + ... + 9731.

It is an arithmetic number, because the mean of its divisors is an integer number (3402840).

Almost surely, 2^46021781 is an apocalyptic number.

It is an amenable number.

46021781 is a deficient number, since it is larger than the sum of its proper divisors (8423659).

46021781 is a wasteful number, since it uses less digits than its factorization.

46021781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8156.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 46021781 is about 6783.9355097171. The cubic root of 46021781 is about 358.3613306170.

The spelling of 46021781 in words is "forty-six million, twenty-one thousand, seven hundred eighty-one".