45071557 has 4 divisors (see below), whose sum is σ = 45232236. Its totient is φ = 44910880.

The previous prime is 45071527. The next prime is 45071561. The reversal of 45071557 is 75517054.

It is a happy number.

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 17969121 + 27102436 = 4239^2 + 5206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45071557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45071527) 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, 79918 + ... + 80479.

It is an arithmetic number, because the mean of its divisors is an integer number (11308059).

Almost surely, 2^45071557 is an apocalyptic number.

It is an amenable number.

45071557 is a deficient number, since it is larger than the sum of its proper divisors (160679).

45071557 is a wasteful number, since it uses less digits than its factorization.

45071557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160678.

The product of its (nonzero) digits is 24500, while the sum is 34.

The square root of 45071557 is about 6713.5353577679. The cubic root of 45071557 is about 355.8777643928.

The spelling of 45071557 in words is "forty-five million, seventy-one thousand, five hundred fifty-seven".