7487451157 has 2 divisors, whose sum is σ = 7487451158. Its totient is φ = 7487451156.

The previous prime is 7487451149. The next prime is 7487451187. The reversal of 7487451157 is 7511547847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6665252881 + 822198276 = 81641^2 + 28674^2 .

It is a cyclic number.

It is not a de Polignac number, because 7487451157 - 2³ = 7487451149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7487451157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7487451187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3743725578 + 3743725579.

It is an arithmetic number, because the mean of its divisors is an integer number (3743725579).

Almost surely, 2^7487451157 is an apocalyptic number.

It is an amenable number.

7487451157 is a deficient number, since it is larger than the sum of its proper divisors (1).

7487451157 is an equidigital number, since it uses as much as digits as its factorization.

7487451157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1097600, while the sum is 49.

The square root of 7487451157 is about 86530.0592684415. The cubic root of 7487451157 is about 1956.3414987100.

The spelling of 7487451157 in words is "seven billion, four hundred eighty-seven million, four hundred fifty-one thousand, one hundred fifty-seven".