45816557 has 4 divisors (see below), whose sum is σ = 46934076. Its totient is φ = 44699040.

The previous prime is 45816553. The next prime is 45816559. The reversal of 45816557 is 75561854.

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 24462916 + 21353641 = 4946^2 + 4621^2 .

It is a cyclic number.

It is not a de Polignac number, because 45816557 - 2² = 45816553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 1117477 = 45816557 / (4 + 5 + 8 + 1 + 6 + 5 + 5 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45816553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558698 + ... + 558779.

It is an arithmetic number, because the mean of its divisors is an integer number (11733519).

Almost surely, 2^45816557 is an apocalyptic number.

It is an amenable number.

45816557 is a deficient number, since it is larger than the sum of its proper divisors (1117519).

45816557 is a wasteful number, since it uses less digits than its factorization.

45816557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117518.

The product of its digits is 168000, while the sum is 41.

The square root of 45816557 is about 6768.7928761338. The cubic root of 45816557 is about 357.8278590446.

The spelling of 45816557 in words is "forty-five million, eight hundred sixteen thousand, five hundred fifty-seven".