5991157156 has 6 divisors (see below), whose sum is σ = 10484525030. Its totient is φ = 2995578576.

The previous prime is 5991157129. The next prime is 5991157171. The reversal of 5991157156 is 6517511995.

It can be written as a sum of positive squares in only one way, i.e., 4491144256 + 1500012900 = 67016^2 + 38730^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 748894641 + ... + 748894648.

Almost surely, 2^5991157156 is an apocalyptic number.

It is an amenable number.

5991157156 is a deficient number, since it is larger than the sum of its proper divisors (4493367874).

5991157156 is a wasteful number, since it uses less digits than its factorization.

5991157156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497789293 (or 1497789291 counting only the distinct ones).

The product of its digits is 425250, while the sum is 49.

The square root of 5991157156 is about 77402.5655647150. The cubic root of 5991157156 is about 1816.2274587007.

The spelling of 5991157156 in words is "five billion, nine hundred ninety-one million, one hundred fifty-seven thousand, one hundred fifty-six".