290445057 has 12 divisors (see below), whose sum is σ = 479464960. Its totient is φ = 165968568.

The previous prime is 290445053. The next prime is 290445059. The reversal of 290445057 is 750544092.

It is not a de Polignac number, because 290445057 - 2² = 290445053 is a prime.

It is a super-2 number, since 2×290445057² = 168716662271466498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (290445053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2305057 + ... + 2305182.

Almost surely, 2^290445057 is an apocalyptic number.

It is an amenable number.

290445057 is a deficient number, since it is larger than the sum of its proper divisors (189019903).

290445057 is a wasteful number, since it uses less digits than its factorization.

290445057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4610252 (or 4610249 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 290445057 is about 17042.4486796939. The cubic root of 290445057 is about 662.2490285642.

It can be divided in two parts, 2904 and 45057, that added together give a square (47961 = 219²).

The spelling of 290445057 in words is "two hundred ninety million, four hundred forty-five thousand, fifty-seven".