141651997 has 2 divisors, whose sum is σ = 141651998. Its totient is φ = 141651996.

The previous prime is 141651953. The next prime is 141652013. The reversal of 141651997 is 799156141.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81108036 + 60543961 = 9006^2 + 7781^2 .

It is a cyclic number.

It is not a de Polignac number, because 141651997 - 2²⁷ = 7434269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (141651907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70825998 + 70825999.

It is an arithmetic number, because the mean of its divisors is an integer number (70825999).

Almost surely, 2^141651997 is an apocalyptic number.

It is an amenable number.

141651997 is a deficient number, since it is larger than the sum of its proper divisors (1).

141651997 is an equidigital number, since it uses as much as digits as its factorization.

141651997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 43.

The square root of 141651997 is about 11901.7644490218. The cubic root of 141651997 is about 521.2838064056.

The spelling of 141651997 in words is "one hundred forty-one million, six hundred fifty-one thousand, nine hundred ninety-seven".