1157550427 has 8 divisors (see below), whose sum is σ = 1264829760. Its totient is φ = 1050612360.

The previous prime is 1157550421. The next prime is 1157550437. The reversal of 1157550427 is 7240557511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1157550427 - 2³ = 1157550419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157550421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78193 + ... + 91810.

It is an arithmetic number, because the mean of its divisors is an integer number (158103720).

Almost surely, 2^1157550427 is an apocalyptic number.

1157550427 is a deficient number, since it is larger than the sum of its proper divisors (107279333).

1157550427 is a wasteful number, since it uses less digits than its factorization.

1157550427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170633.

The product of its (nonzero) digits is 49000, while the sum is 37.

The square root of 1157550427 is about 34022.7927572091. The cubic root of 1157550427 is about 1049.9774528794.

The spelling of 1157550427 in words is "one billion, one hundred fifty-seven million, five hundred fifty thousand, four hundred twenty-seven".