1531350550 has 24 divisors (see below), whose sum is σ = 2849987232. Its totient is φ = 612180000.

The previous prime is 1531350547. The next prime is 1531350551. The reversal of 1531350550 is 550531351.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531350551) 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, 86995 + ... + 103105.

It is an arithmetic number, because the mean of its divisors is an integer number (118749468).

Almost surely, 2^1531350550 is an apocalyptic number.

1531350550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1531350550 is a deficient number, since it is larger than the sum of its proper divisors (1318636682).

1531350550 is a wasteful number, since it uses less digits than its factorization.

1531350550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18024 (or 18019 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 28.

The square root of 1531350550 is about 39132.4743659278. The cubic root of 1531350550 is about 1152.6343012716.

The spelling of 1531350550 in words is "one billion, five hundred thirty-one million, three hundred fifty thousand, five hundred fifty".