161027051 has 4 divisors (see below), whose sum is σ = 166221504. Its totient is φ = 155832600.

The previous prime is 161027023. The next prime is 161027057. The reversal of 161027051 is 150720161.

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 161027051 - 2¹⁴ = 161010667 is a prime.

It is a super-2 number, since 2×161027051² = 51859422307513202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161027057) 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, 2597180 + ... + 2597241.

It is an arithmetic number, because the mean of its divisors is an integer number (41555376).

Almost surely, 2^161027051 is an apocalyptic number.

161027051 is a deficient number, since it is larger than the sum of its proper divisors (5194453).

161027051 is an equidigital number, since it uses as much as digits as its factorization.

161027051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194452.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 161027051 is about 12689.6434544080. The cubic root of 161027051 is about 544.0426488964.

The spelling of 161027051 in words is "one hundred sixty-one million, twenty-seven thousand, fifty-one".