1540252550 has 24 divisors (see below), whose sum is σ = 2904121416. Its totient is φ = 607659840.

The previous prime is 1540252541. The next prime is 1540252573. The reversal of 1540252550 is 552520451.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 207344 + ... + 214643.

It is an arithmetic number, because the mean of its divisors is an integer number (121005059).

Almost surely, 2^1540252550 is an apocalyptic number.

1540252550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1540252550 is a deficient number, since it is larger than the sum of its proper divisors (1363868866).

1540252550 is a wasteful number, since it uses less digits than its factorization.

1540252550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422072 (or 422067 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 1540252550 is about 39246.0513937390. The cubic root of 1540252550 is about 1154.8634734273.

The spelling of 1540252550 in words is "one billion, five hundred forty million, two hundred fifty-two thousand, five hundred fifty".