2151023520 has 48 divisors (see below), whose sum is σ = 6775725600. Its totient is φ = 573606144.

The previous prime is 2151023519. The next prime is 2151023521. The reversal of 2151023520 is 253201512.

It is an interprime number because it is at equal distance from previous prime (2151023519) and next prime (2151023521).

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (2151023521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2240170 + ... + 2241129.

It is an arithmetic number, because the mean of its divisors is an integer number (141160950).

Almost surely, 2^2151023520 is an apocalyptic number.

2151023520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151023520 is an abundant number, since it is smaller than the sum of its proper divisors (4624702080).

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

2151023520 is a wasteful number, since it uses less digits than its factorization.

2151023520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4481317 (or 4481309 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2151023520 is about 46379.1280642489. The cubic root of 2151023520 is about 1290.8676573718.

The spelling of 2151023520 in words is "two billion, one hundred fifty-one million, twenty-three thousand, five hundred twenty".