5072870521 has 4 divisors (see below), whose sum is σ = 5142361972. Its totient is φ = 5003379072.

The previous prime is 5072870437. The next prime is 5072870581. The reversal of 5072870521 is 1250782705.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1250782705 = 5 ⋅250156541.

It can be written as a sum of positive squares in 2 ways, for example, as 3084691600 + 1988178921 = 55540^2 + 44589^2 .

It is a cyclic number.

It is not a de Polignac number, because 5072870521 - 2⁹ = 5072870009 is a prime.

It is a super-2 number, since 2×5072870521² = 51468030645661622882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5072870581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34745616 + ... + 34745761.

It is an arithmetic number, because the mean of its divisors is an integer number (1285590493).

Almost surely, 2^5072870521 is an apocalyptic number.

It is an amenable number.

5072870521 is a deficient number, since it is larger than the sum of its proper divisors (69491451).

5072870521 is an equidigital number, since it uses as much as digits as its factorization.

5072870521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69491450.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 5072870521 is about 71224.0866631507. The cubic root of 5072870521 is about 1718.2430365415.

The spelling of 5072870521 in words is "five billion, seventy-two million, eight hundred seventy thousand, five hundred twenty-one".