161602461 has 12 divisors (see below), whose sum is σ = 236714400. Its totient is φ = 106217160.

The previous prime is 161602451. The next prime is 161602477. The reversal of 161602461 is 164206161.

161602461 is a `hidden beast` number, since 1 + 616 + 0 + 2 + 46 + 1 = 666.

It is not a de Polignac number, because 161602461 - 2⁷ = 161602333 is a prime.

It is a super-2 number, since 2×161602461² = 52230710802513042, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161602451) 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, 125811 + ... + 127088.

It is an arithmetic number, because the mean of its divisors is an integer number (19726200).

Almost surely, 2^161602461 is an apocalyptic number.

It is an amenable number.

161602461 is a deficient number, since it is larger than the sum of its proper divisors (75111939).

161602461 is a wasteful number, since it uses less digits than its factorization.

161602461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252976 (or 252973 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 161602461 is about 12712.2956620746. The cubic root of 161602461 is about 544.6899013060.

The spelling of 161602461 in words is "one hundred sixty-one million, six hundred two thousand, four hundred sixty-one".