156800045 has 8 divisors (see below), whose sum is σ = 188284824. Its totient is φ = 125356864.

The previous prime is 156800041. The next prime is 156800081. The reversal of 156800045 is 540008651.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12752041 + 144048004 = 3571^2 + 12002^2 .

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 156800045 - 2² = 156800041 is a prime.

It is a super-2 number, since 2×156800045² = 49172508224004050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156799990 and 156800017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156800041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1394 + ... + 17763.

It is an arithmetic number, because the mean of its divisors is an integer number (23535603).

Almost surely, 2^156800045 is an apocalyptic number.

It is an amenable number.

156800045 is a deficient number, since it is larger than the sum of its proper divisors (31484779).

156800045 is a wasteful number, since it uses less digits than its factorization.

156800045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20799.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 156800045 is about 12521.9824708390. The cubic root of 156800045 is about 539.2399515406.

Adding to 156800045 its reverse (540008651), we get a palindrome (696808696).

It can be divided in two parts, 1568000 and 45, that multiplied together give a square (70560000 = 8400²).

The spelling of 156800045 in words is "one hundred fifty-six million, eight hundred thousand, forty-five".