156013073 has 6 divisors (see below), whose sum is σ = 159727554. Its totient is φ = 152383056.

The previous prime is 156013061. The next prime is 156013087. The reversal of 156013073 is 370310651.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 149132944 + 6880129 = 12212^2 + 2623^2 .

It is not a de Polignac number, because 156013073 - 2²⁰ = 154964497 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156013043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40340 + ... + 44037.

It is an arithmetic number, because the mean of its divisors is an integer number (26621259).

Almost surely, 2^156013073 is an apocalyptic number.

It is an amenable number.

156013073 is a deficient number, since it is larger than the sum of its proper divisors (3714481).

156013073 is an frugal number, since it uses more digits than its factorization.

156013073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84463 (or 84420 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 156013073 is about 12490.5193246718. The cubic root of 156013073 is about 538.3362981260.

The spelling of 156013073 in words is "one hundred fifty-six million, thirteen thousand, seventy-three".