161254552 has 16 divisors (see below), whose sum is σ = 307477800. Its totient is φ = 79260480.

The previous prime is 161254523. The next prime is 161254553. The reversal of 161254552 is 255452161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161254553) 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, 170349 + ... + 171292.

Almost surely, 2^161254552 is an apocalyptic number.

It is an amenable number.

161254552 is a deficient number, since it is larger than the sum of its proper divisors (146223248).

161254552 is a wasteful number, since it uses less digits than its factorization.

161254552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341706 (or 341702 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

The square root of 161254552 is about 12698.6043327604. The cubic root of 161254552 is about 544.2987383828.

The spelling of 161254552 in words is "one hundred sixty-one million, two hundred fifty-four thousand, five hundred fifty-two".