5120187157 has 4 divisors (see below), whose sum is σ = 5139221580. Its totient is φ = 5101152736.

The previous prime is 5120187139. The next prime is 5120187161. The reversal of 5120187157 is 7517810215.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2862892036 + 2257295121 = 53506^2 + 47511^2 .

It is a cyclic number.

It is not a de Polignac number, because 5120187157 - 2¹⁹ = 5119662869 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 (5120187167) 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, 9516808 + ... + 9517345.

It is an arithmetic number, because the mean of its divisors is an integer number (1284805395).

Almost surely, 2^5120187157 is an apocalyptic number.

It is an amenable number.

5120187157 is a deficient number, since it is larger than the sum of its proper divisors (19034423).

5120187157 is a wasteful number, since it uses less digits than its factorization.

5120187157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19034422.

The product of its (nonzero) digits is 19600, while the sum is 37.

The square root of 5120187157 is about 71555.4830673373. The cubic root of 5120187157 is about 1723.5687526828.

The spelling of 5120187157 in words is "five billion, one hundred twenty million, one hundred eighty-seven thousand, one hundred fifty-seven".