1655142550 has 48 divisors (see below), whose sum is σ = 3120059232. Its totient is φ = 653184000.

The previous prime is 1655142529. The next prime is 1655142551. The reversal of 1655142550 is 552415561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655142551) 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, 2459014 + ... + 2459686.

It is an arithmetic number, because the mean of its divisors is an integer number (65001234).

Almost surely, 2^1655142550 is an apocalyptic number.

1655142550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1655142550 is a deficient number, since it is larger than the sum of its proper divisors (1464916682).

1655142550 is a wasteful number, since it uses less digits than its factorization.

1655142550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273 (or 1268 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 34.

The square root of 1655142550 is about 40683.4431925323. The cubic root of 1655142550 is about 1182.8921086408.

The spelling of 1655142550 in words is "one billion, six hundred fifty-five million, one hundred forty-two thousand, five hundred fifty".