45616781 has 8 divisors (see below), whose sum is σ = 52276224. Its totient is φ = 38993040.

The previous prime is 45616757. The next prime is 45616783. The reversal of 45616781 is 18761654.

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

It is a cyclic number.

It is not a de Polignac number, because 45616781 - 2¹⁴ = 45600397 is a prime.

It is a super-2 number, since 2×45616781² = 4161781417603922, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45616783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6125 + ... + 11346.

It is an arithmetic number, because the mean of its divisors is an integer number (6534528).

Almost surely, 2^45616781 is an apocalyptic number.

It is an amenable number.

45616781 is a deficient number, since it is larger than the sum of its proper divisors (6659443).

45616781 is a wasteful number, since it uses less digits than its factorization.

45616781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17851.

The product of its digits is 40320, while the sum is 38.

The square root of 45616781 is about 6754.0196179757. The cubic root of 45616781 is about 357.3070169747.

The spelling of 45616781 in words is "forty-five million, six hundred sixteen thousand, seven hundred eighty-one".