161374526 has 4 divisors (see below), whose sum is σ = 242061792. Its totient is φ = 80687262.

The previous prime is 161374519. The next prime is 161374537. The reversal of 161374526 is 625473161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 625473161 = 691 ⋅905171.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40343630 + ... + 40343633.

It is an arithmetic number, because the mean of its divisors is an integer number (60515448).

Almost surely, 2^161374526 is an apocalyptic number.

161374526 is a deficient number, since it is larger than the sum of its proper divisors (80687266).

161374526 is an equidigital number, since it uses as much as digits as its factorization.

161374526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80687265.

The product of its digits is 30240, while the sum is 35.

The square root of 161374526 is about 12703.3273593968. The cubic root of 161374526 is about 544.4336916969.

The spelling of 161374526 in words is "one hundred sixty-one million, three hundred seventy-four thousand, five hundred twenty-six".