1551160520 has 128 divisors (see below), whose sum is σ = 4329642240. Its totient is φ = 487019520.

The previous prime is 1551160517. The next prime is 1551160553. The reversal of 1551160520 is 250611551.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 1551160520.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 475214 + ... + 478466.

It is an arithmetic number, because the mean of its divisors is an integer number (33825330).

Almost surely, 2^1551160520 is an apocalyptic number.

1551160520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1551160520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2164821120).

1551160520 is an abundant number, since it is smaller than the sum of its proper divisors (2778481720).

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

1551160520 is a wasteful number, since it uses less digits than its factorization.

1551160520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3415 (or 3411 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 1551160520 is about 39384.7752310458. The cubic root of 1551160520 is about 1157.5832860565.

The spelling of 1551160520 in words is "one billion, five hundred fifty-one million, one hundred sixty thousand, five hundred twenty".