7137020557 has 4 divisors (see below), whose sum is σ = 7254020956. Its totient is φ = 7020020160.

The previous prime is 7137020549. The next prime is 7137020567. The reversal of 7137020557 is 7550207317.

7137020557 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7550207317 = 47807 ⋅157931.

It can be written as a sum of positive squares in 2 ways, for example, as 3491155396 + 3645865161 = 59086^2 + 60381^2 .

It is a cyclic number.

It is not a de Polignac number, because 7137020557 - 2³ = 7137020549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7137020567) 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, 58500108 + ... + 58500229.

It is an arithmetic number, because the mean of its divisors is an integer number (1813505239).

Almost surely, 2^7137020557 is an apocalyptic number.

It is an amenable number.

7137020557 is a deficient number, since it is larger than the sum of its proper divisors (117000399).

7137020557 is a wasteful number, since it uses less digits than its factorization.

7137020557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117000398.

The product of its (nonzero) digits is 51450, while the sum is 37.

The square root of 7137020557 is about 84480.8887086304. Note that the first 3 decimals coincide. The cubic root of 7137020557 is about 1925.3320892856.

The spelling of 7137020557 in words is "seven billion, one hundred thirty-seven million, twenty thousand, five hundred fifty-seven".