141557761 has 2 divisors, whose sum is σ = 141557762. Its totient is φ = 141557760.

The previous prime is 141557723. The next prime is 141557783. The reversal of 141557761 is 167755141.

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., 130667761 + 10890000 = 11431^2 + 3300^2 .

It is a cyclic number.

It is not a de Polignac number, because 141557761 - 2²⁷ = 7340033 is a prime.

It is equal to p_7995025 and since 141557761 and 7995025 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 141557761.

It is not a weakly prime, because it can be changed into another prime (141557701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70778880 + 70778881.

It is an arithmetic number, because the mean of its divisors is an integer number (70778881).

It is a Proth number, since it is equal to 135 ⋅ 2²⁰ + 1 and 135 < 2²⁰.

Almost surely, 2^141557761 is an apocalyptic number.

It is an amenable number.

141557761 is a deficient number, since it is larger than the sum of its proper divisors (1).

141557761 is an equidigital number, since it uses as much as digits as its factorization.

141557761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29400, while the sum is 37.

The square root of 141557761 is about 11897.8048815737. The cubic root of 141557761 is about 521.1681836134.

The spelling of 141557761 in words is "one hundred forty-one million, five hundred fifty-seven thousand, seven hundred sixty-one".