156401741 has 2 divisors, whose sum is σ = 156401742. Its totient is φ = 156401740.

The previous prime is 156401659. The next prime is 156401767. The reversal of 156401741 is 147104651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124434025 + 31967716 = 11155^2 + 5654^2 .

It is an emirp because it is prime and its reverse (147104651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 156401741 - 2²² = 152207437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156401041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78200870 + 78200871.

It is an arithmetic number, because the mean of its divisors is an integer number (78200871).

Almost surely, 2^156401741 is an apocalyptic number.

It is an amenable number.

156401741 is a deficient number, since it is larger than the sum of its proper divisors (1).

156401741 is an equidigital number, since it uses as much as digits as its factorization.

156401741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 156401741 is about 12506.0681670939. The cubic root of 156401741 is about 538.7829713368.

The spelling of 156401741 in words is "one hundred fifty-six million, four hundred one thousand, seven hundred forty-one".