45061581 has 8 divisors (see below), whose sum is σ = 60633760. Its totient is φ = 29765232.

The previous prime is 45061567. The next prime is 45061589. The reversal of 45061581 is 18516054.

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

It is not a de Polignac number, because 45061581 - 2⁹ = 45061069 is a prime.

It is a super-2 number, since 2×45061581² = 4061092164439122, 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 (45061589) 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, 68575 + ... + 69228.

It is an arithmetic number, because the mean of its divisors is an integer number (7579220).

Almost surely, 2^45061581 is an apocalyptic number.

It is an amenable number.

45061581 is a deficient number, since it is larger than the sum of its proper divisors (15572179).

45061581 is a wasteful number, since it uses less digits than its factorization.

45061581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137915.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 45061581 is about 6712.7923400028. The cubic root of 45061581 is about 355.8515061583.

The spelling of 45061581 in words is "forty-five million, sixty-one thousand, five hundred eighty-one".