1000557172 has 12 divisors (see below), whose sum is σ = 1753205440. Its totient is φ = 499641336.

The previous prime is 1000557143. The next prime is 1000557179. The reversal of 1000557172 is 2717550001.

It is a super-2 number, since 2×1000557172² = 2002229308881275168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1000557172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000557179) 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, 155772 + ... + 162067.

Almost surely, 2^1000557172 is an apocalyptic number.

It is an amenable number.

1000557172 is a deficient number, since it is larger than the sum of its proper divisors (752648268).

1000557172 is a wasteful number, since it uses less digits than its factorization.

1000557172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318630 (or 318628 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 1000557172 is about 31631.5850377435. The cubic root of 1000557172 is about 1000.1856895173.

The spelling of 1000557172 in words is "one billion, five hundred fifty-seven thousand, one hundred seventy-two".