1051401520 has 160 divisors (see below), whose sum is σ = 2719825920. Its totient is φ = 375598080.

The previous prime is 1051401511. The next prime is 1051401523. The reversal of 1051401520 is 251041501.

It is a super-2 number, since 2×1051401520² = 2210890312516620800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1051401523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5504625 + ... + 5504815.

It is an arithmetic number, because the mean of its divisors is an integer number (16998912).

Almost surely, 2^1051401520 is an apocalyptic number.

1051401520 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 1051401520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1359912960).

1051401520 is an abundant number, since it is smaller than the sum of its proper divisors (1668424400).

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

1051401520 is a wasteful number, since it uses less digits than its factorization.

1051401520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 1051401520 is about 32425.3222034878. The cubic root of 1051401520 is about 1016.8483779238.

The spelling of 1051401520 in words is "one billion, fifty-one million, four hundred one thousand, five hundred twenty".