356113561 has 4 divisors (see below), whose sum is σ = 374856400. Its totient is φ = 337370724.

The previous prime is 356113543. The next prime is 356113601. The reversal of 356113561 is 165311653.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 356113561 - 2¹¹ = 356111513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (356113661) 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, 9371391 + ... + 9371428.

It is an arithmetic number, because the mean of its divisors is an integer number (93714100).

Almost surely, 2^356113561 is an apocalyptic number.

It is an amenable number.

356113561 is a deficient number, since it is larger than the sum of its proper divisors (18742839).

356113561 is a wasteful number, since it uses less digits than its factorization.

356113561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18742838.

The product of its digits is 8100, while the sum is 31.

The square root of 356113561 is about 18870.9713846426. The cubic root of 356113561 is about 708.8094582075.

The spelling of 356113561 in words is "three hundred fifty-six million, one hundred thirteen thousand, five hundred sixty-one".