161142451 has 2 divisors, whose sum is σ = 161142452. Its totient is φ = 161142450.

The previous prime is 161142427. The next prime is 161142479. The reversal of 161142451 is 154241161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161142451 - 2⁷ = 161142323 is a prime.

It is not a weakly prime, because it can be changed into another prime (161142851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80571225 + 80571226.

It is an arithmetic number, because the mean of its divisors is an integer number (80571226).

Almost surely, 2^161142451 is an apocalyptic number.

161142451 is a deficient number, since it is larger than the sum of its proper divisors (1).

161142451 is an equidigital number, since it uses as much as digits as its factorization.

161142451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 25.

The square root of 161142451 is about 12694.1896551139. The cubic root of 161142451 is about 544.1725805437.

The spelling of 161142451 in words is "one hundred sixty-one million, one hundred forty-two thousand, four hundred fifty-one".