161477087 has 4 divisors (see below), whose sum is σ = 161760456. Its totient is φ = 161193720.

The previous prime is 161477077. The next prime is 161477093. The reversal of 161477087 is 780774161.

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 161477087 - 2⁶ = 161477023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161477077) 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, 140828 + ... + 141969.

It is an arithmetic number, because the mean of its divisors is an integer number (40440114).

Almost surely, 2^161477087 is an apocalyptic number.

161477087 is a deficient number, since it is larger than the sum of its proper divisors (283369).

161477087 is an equidigital number, since it uses as much as digits as its factorization.

161477087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283368.

The product of its (nonzero) digits is 65856, while the sum is 41.

The square root of 161477087 is about 12707.3634952338. The cubic root of 161477087 is about 544.5490048967.

The spelling of 161477087 in words is "one hundred sixty-one million, four hundred seventy-seven thousand, eighty-seven".