1156501655 has 16 divisors (see below), whose sum is σ = 1433769984. Its totient is φ = 894606240.

The previous prime is 1156501639. The next prime is 1156501669. The reversal of 1156501655 is 5561056511.

It is not a de Polignac number, because 1156501655 - 2⁴ = 1156501639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246764 + ... + 251406.

It is an arithmetic number, because the mean of its divisors is an integer number (89610624).

Almost surely, 2^1156501655 is an apocalyptic number.

1156501655 is a deficient number, since it is larger than the sum of its proper divisors (277268329).

1156501655 is a wasteful number, since it uses less digits than its factorization.

1156501655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6286.

The product of its (nonzero) digits is 22500, while the sum is 35.

The square root of 1156501655 is about 34007.3764792287. The cubic root of 1156501655 is about 1049.6602544048.

The spelling of 1156501655 in words is "one billion, one hundred fifty-six million, five hundred one thousand, six hundred fifty-five".