161051473 has 4 divisors (see below), whose sum is σ = 175692528. Its totient is φ = 146410420.

The previous prime is 161051461. The next prime is 161051483. The reversal of 161051473 is 374150161.

161051473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 161051473 - 2¹⁷ = 160920401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161051483) 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, 7320511 + ... + 7320532.

It is an arithmetic number, because the mean of its divisors is an integer number (43923132).

Almost surely, 2^161051473 is an apocalyptic number.

It is an amenable number.

161051473 is a deficient number, since it is larger than the sum of its proper divisors (14641055).

161051473 is a wasteful number, since it uses less digits than its factorization.

161051473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14641054.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 161051473 is about 12690.6056987048. The cubic root of 161051473 is about 544.0701513933.

It can be divided in two parts, 16105 and 1473, that added together give a triangular number (17578 = T₁₈₇).

The spelling of 161051473 in words is "one hundred sixty-one million, fifty-one thousand, four hundred seventy-three".