7247533157 has 4 divisors (see below), whose sum is σ = 7250729580. Its totient is φ = 7244336736.

The previous prime is 7247533133. The next prime is 7247533187. The reversal of 7247533157 is 7513357427.

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 4261347841 + 2986185316 = 65279^2 + 54646^2 .

It is a cyclic number.

It is not a de Polignac number, because 7247533157 - 2¹⁰ = 7247532133 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 (7247533187) 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, 1594808 + ... + 1599345.

It is an arithmetic number, because the mean of its divisors is an integer number (1812682395).

Almost surely, 2^7247533157 is an apocalyptic number.

It is an amenable number.

7247533157 is a deficient number, since it is larger than the sum of its proper divisors (3196423).

7247533157 is a wasteful number, since it uses less digits than its factorization.

7247533157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3196422.

The product of its digits is 617400, while the sum is 44.

The square root of 7247533157 is about 85132.4447963290. Note that the first 3 decimals coincide. The cubic root of 7247533157 is about 1935.2187817355.

The spelling of 7247533157 in words is "seven billion, two hundred forty-seven million, five hundred thirty-three thousand, one hundred fifty-seven".