156249983 has 2 divisors, whose sum is σ = 156249984. Its totient is φ = 156249982.

The previous prime is 156249923. The next prime is 156250027. The reversal of 156249983 is 389942651.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 156249983 - 2¹⁶ = 156184447 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156249923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78124991 + 78124992.

It is an arithmetic number, because the mean of its divisors is an integer number (78124992).

Almost surely, 2^156249983 is an apocalyptic number.

156249983 is a deficient number, since it is larger than the sum of its proper divisors (1).

156249983 is an equidigital number, since it uses as much as digits as its factorization.

156249983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 47.

The square root of 156249983 is about 12499.9993200000. Note that the first 3 decimals coincide. The cubic root of 156249983 is about 538.6086529744.

The spelling of 156249983 in words is "one hundred fifty-six million, two hundred forty-nine thousand, nine hundred eighty-three".