1551131000 has 64 divisors (see below), whose sum is σ = 3843197280. Its totient is φ = 583948800.

The previous prime is 1551130993. The next prime is 1551131039. The reversal of 1551131000 is 1311551.

It is a super-2 number, since 2×1551131000² = 4812014758322000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 1551131000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28622 + ... + 62621.

Almost surely, 2^1551131000 is an apocalyptic number.

1551131000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1551131000 is an abundant number, since it is smaller than the sum of its proper divisors (2292066280).

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

1551131000 is a wasteful number, since it uses less digits than its factorization.

1551131000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91281 (or 91267 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 17.

The square root of 1551131000 is about 39384.4004651588. The cubic root of 1551131000 is about 1157.5759427212.

Adding to 1551131000 its reverse (1311551), we get a palindrome (1552442551).

The spelling of 1551131000 in words is "one billion, five hundred fifty-one million, one hundred thirty-one thousand".