1555827252 has 48 divisors (see below), whose sum is σ = 4158053760. Its totient is φ = 443538432.

The previous prime is 1555827197. The next prime is 1555827263. The reversal of 1555827252 is 2527285551.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 18124 + ... + 58652.

It is an arithmetic number, because the mean of its divisors is an integer number (86626120).

Almost surely, 2^1555827252 is an apocalyptic number.

1555827252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1555827252 is an abundant number, since it is smaller than the sum of its proper divisors (2602226508).

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

1555827252 is a wasteful number, since it uses less digits than its factorization.

1555827252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41000 (or 40998 counting only the distinct ones).

The product of its digits is 280000, while the sum is 42.

The square root of 1555827252 is about 39443.9761180335. The cubic root of 1555827252 is about 1158.7430032312.

The spelling of 1555827252 in words is "one billion, five hundred fifty-five million, eight hundred twenty-seven thousand, two hundred fifty-two".