161650054 has 16 divisors (see below), whose sum is σ = 246055680. Its totient is φ = 79639560.

The previous prime is 161650051. The next prime is 161650079. The reversal of 161650054 is 450056161.

It is a super-2 number, since 2×161650054² = 52261479916405832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161650051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41607 + ... + 45325.

It is an arithmetic number, because the mean of its divisors is an integer number (15378480).

Almost surely, 2^161650054 is an apocalyptic number.

161650054 is a deficient number, since it is larger than the sum of its proper divisors (84405626).

161650054 is a wasteful number, since it uses less digits than its factorization.

161650054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 161650054 is about 12714.1674520985. The cubic root of 161650054 is about 544.7433676577.

The spelling of 161650054 in words is "one hundred sixty-one million, six hundred fifty thousand, fifty-four".