161132057 has 4 divisors (see below), whose sum is σ = 161214900. Its totient is φ = 161049216.

The previous prime is 161132053. The next prime is 161132071. The reversal of 161132057 is 750231161.

161132057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 107827456 + 53304601 = 10384^2 + 7301^2 .

It is a cyclic number.

It is not a de Polignac number, because 161132057 - 2² = 161132053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161132053) 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, 38432 + ... + 42417.

It is an arithmetic number, because the mean of its divisors is an integer number (40303725).

Almost surely, 2^161132057 is an apocalyptic number.

It is an amenable number.

161132057 is a deficient number, since it is larger than the sum of its proper divisors (82843).

161132057 is an equidigital number, since it uses as much as digits as its factorization.

161132057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82842.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 161132057 is about 12693.7802486099. The cubic root of 161132057 is about 544.1608802305.

The spelling of 161132057 in words is "one hundred sixty-one million, one hundred thirty-two thousand, fifty-seven".