1531053550 has 48 divisors (see below), whose sum is σ = 3172609440. Its totient is φ = 545811840.

The previous prime is 1531053527. The next prime is 1531053551. The reversal of 1531053550 is 553501351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531053551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21762 + ... + 59461.

It is an arithmetic number, because the mean of its divisors is an integer number (66096030).

Almost surely, 2^1531053550 is an apocalyptic number.

1531053550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1531053550 is an abundant number, since it is smaller than the sum of its proper divisors (1641555890).

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

1531053550 is a wasteful number, since it uses less digits than its factorization.

1531053550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81277 (or 81272 counting only the distinct ones).

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

The square root of 1531053550 is about 39128.6793797082. The cubic root of 1531053550 is about 1152.5597800108.

The spelling of 1531053550 in words is "one billion, five hundred thirty-one million, fifty-three thousand, five hundred fifty".