2257161004 has 24 divisors (see below), whose sum is σ = 4518725120. Its totient is φ = 966411216.

The previous prime is 2257160989. The next prime is 2257161017. The reversal of 2257161004 is 4001617522.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9702 + ... + 67885.

Almost surely, 2^2257161004 is an apocalyptic number.

It is an amenable number.

2257161004 is an abundant number, since it is smaller than the sum of its proper divisors (2261564116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2257161004 is a wasteful number, since it uses less digits than its factorization.

2257161004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78637 (or 78635 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 2257161004 is about 47509.5885479973. The cubic root of 2257161004 is about 1311.7593833915.

Adding to 2257161004 its reverse (4001617522), we get a palindrome (6258778526).

The spelling of 2257161004 in words is "two billion, two hundred fifty-seven million, one hundred sixty-one thousand, four".