156745117 has 12 divisors (see below), whose sum is σ = 175167036. Its totient is φ = 139754880.

The previous prime is 156745081. The next prime is 156745153. The reversal of 156745117 is 711547651.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (156745081) and next prime (156745153).

It can be written as a sum of positive squares in 2 ways, for example, as 97239321 + 59505796 = 9861^2 + 7714^2 .

It is not a de Polignac number, because 156745117 - 2⁷ = 156744989 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 (156745187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6634 + ... + 18907.

It is an arithmetic number, because the mean of its divisors is an integer number (14597253).

Almost surely, 2^156745117 is an apocalyptic number.

156745117 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

156745117 is a deficient number, since it is larger than the sum of its proper divisors (18421919).

156745117 is a wasteful number, since it uses less digits than its factorization.

156745117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25596 (or 25577 counting only the distinct ones).

The product of its digits is 29400, while the sum is 37.

The square root of 156745117 is about 12519.7890157942. The cubic root of 156745117 is about 539.1769778526.

The spelling of 156745117 in words is "one hundred fifty-six million, seven hundred forty-five thousand, one hundred seventeen".