161546877 has 12 divisors (see below), whose sum is σ = 234833820. Its totient is φ = 107011008.

The previous prime is 161546857. The next prime is 161546893. The reversal of 161546877 is 778645161.

It can be written as a sum of positive squares in 2 ways, for example, as 78481881 + 83064996 = 8859^2 + 9114^2 .

It is not a de Polignac number, because 161546877 - 2⁶ = 161546813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161546857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55752 + ... + 58577.

It is an arithmetic number, because the mean of its divisors is an integer number (19569485).

Almost surely, 2^161546877 is an apocalyptic number.

It is an amenable number.

161546877 is a deficient number, since it is larger than the sum of its proper divisors (73286943).

161546877 is a wasteful number, since it uses less digits than its factorization.

161546877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114492 (or 114489 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 161546877 is about 12710.1092442197. The cubic root of 161546877 is about 544.6274445110.

The spelling of 161546877 in words is "one hundred sixty-one million, five hundred forty-six thousand, eight hundred seventy-seven".