2521700073 has 16 divisors (see below), whose sum is σ = 3757453440. Its totient is φ = 1671412752.

The previous prime is 2521700063. The next prime is 2521700081. The reversal of 2521700073 is 3700071252.

2521700073 is a `hidden beast` number, since 2 + 521 + 70 + 0 + 0 + 73 = 666.

2521700073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2521700073 - 2⁴ = 2521700057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2521700023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265261 + ... + 274602.

It is an arithmetic number, because the mean of its divisors is an integer number (234840840).

Almost surely, 2^2521700073 is an apocalyptic number.

It is an amenable number.

2521700073 is a deficient number, since it is larger than the sum of its proper divisors (1235753367).

2521700073 is a wasteful number, since it uses less digits than its factorization.

2521700073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540045 (or 540039 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 2521700073 is about 50216.5318694949. The cubic root of 2521700073 is about 1361.1243716830.

The spelling of 2521700073 in words is "two billion, five hundred twenty-one million, seven hundred thousand, seventy-three".