156740545 has 8 divisors (see below), whose sum is σ = 202557096. Its totient is φ = 115746816.

The previous prime is 156740539. The next prime is 156740569. The reversal of 156740545 is 545047651.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8485569 + 148254976 = 2913^2 + 12176^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 156740545 - 2⁵ = 156740513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1205632 + ... + 1205761.

It is an arithmetic number, because the mean of its divisors is an integer number (25319637).

Almost surely, 2^156740545 is an apocalyptic number.

It is an amenable number.

156740545 is a deficient number, since it is larger than the sum of its proper divisors (45816551).

156740545 is a wasteful number, since it uses less digits than its factorization.

156740545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411411.

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 156740545 is about 12519.6064235263. The cubic root of 156740545 is about 539.1717354966.

The spelling of 156740545 in words is "one hundred fifty-six million, seven hundred forty thousand, five hundred forty-five".