156061247 has 2 divisors, whose sum is σ = 156061248. Its totient is φ = 156061246.

The previous prime is 156061189. The next prime is 156061271. The reversal of 156061247 is 742160651.

It is a strong prime.

It is an emirp because it is prime and its reverse (742160651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 156061247 - 2⁶ = 156061183 is a prime.

It is a super-2 number, since 2×156061247² = 48710225630390018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156061447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78030623 + 78030624.

It is an arithmetic number, because the mean of its divisors is an integer number (78030624).

Almost surely, 2^156061247 is an apocalyptic number.

156061247 is a deficient number, since it is larger than the sum of its proper divisors (1).

156061247 is an equidigital number, since it uses as much as digits as its factorization.

156061247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 156061247 is about 12492.4475984492. The cubic root of 156061247 is about 538.3917019104.

The spelling of 156061247 in words is "one hundred fifty-six million, sixty-one thousand, two hundred forty-seven".