161451297 has 12 divisors (see below), whose sum is σ = 266522880. Its totient is φ = 92257848.

The previous prime is 161451293. The next prime is 161451361. The reversal of 161451297 is 792154161.

161451297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161451297 - 2² = 161451293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161451293) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1281297 + ... + 1281422.

It is an arithmetic number, because the mean of its divisors is an integer number (22210240).

Almost surely, 2^161451297 is an apocalyptic number.

It is an amenable number.

161451297 is a deficient number, since it is larger than the sum of its proper divisors (105071583).

161451297 is a wasteful number, since it uses less digits than its factorization.

161451297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562732 (or 2562729 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 161451297 is about 12706.3486887461. The cubic root of 161451297 is about 544.5200128235.

The spelling of 161451297 in words is "one hundred sixty-one million, four hundred fifty-one thousand, two hundred ninety-seven".