161254623 has 8 divisors (see below), whose sum is σ = 215246848. Its totient is φ = 107382744.

The previous prime is 161254607. The next prime is 161254631. The reversal of 161254623 is 326452161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161254623 - 2⁴ = 161254607 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 (161254663) 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, 26911 + ... + 32352.

It is an arithmetic number, because the mean of its divisors is an integer number (26905856).

Almost surely, 2^161254623 is an apocalyptic number.

161254623 is a deficient number, since it is larger than the sum of its proper divisors (53992225).

161254623 is an equidigital number, since it uses as much as digits as its factorization.

161254623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60173.

The product of its digits is 8640, while the sum is 30.

The square root of 161254623 is about 12698.6071283429. The cubic root of 161254623 is about 544.2988182672.

The spelling of 161254623 in words is "one hundred sixty-one million, two hundred fifty-four thousand, six hundred twenty-three".