1157553047 has 4 divisors (see below), whose sum is σ = 1322917776. Its totient is φ = 992188320.

The previous prime is 1157553031. The next prime is 1157553053. The reversal of 1157553047 is 7403557511.

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

It is a cyclic number.

It is not a de Polignac number, because 1157553047 - 2⁴ = 1157553031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1157553047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157553097) 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, 82682354 + ... + 82682367.

It is an arithmetic number, because the mean of its divisors is an integer number (330729444).

Almost surely, 2^1157553047 is an apocalyptic number.

1157553047 is a deficient number, since it is larger than the sum of its proper divisors (165364729).

1157553047 is an equidigital number, since it uses as much as digits as its factorization.

1157553047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165364728.

The product of its (nonzero) digits is 73500, while the sum is 38.

The square root of 1157553047 is about 34022.8312607872. The cubic root of 1157553047 is about 1049.9782450519.

The spelling of 1157553047 in words is "one billion, one hundred fifty-seven million, five hundred fifty-three thousand, forty-seven".