207072157 has 4 divisors (see below), whose sum is σ = 213751936. Its totient is φ = 200392380.

The previous prime is 207072149. The next prime is 207072169. The reversal of 207072157 is 751270702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 207072157 - 2³ = 207072149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 6679747 = 207072157 / (2 + 0 + 7 + 0 + 7 + 2 + 1 + 5 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207372157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3339843 + ... + 3339904.

It is an arithmetic number, because the mean of its divisors is an integer number (53437984).

Almost surely, 2^207072157 is an apocalyptic number.

It is an amenable number.

207072157 is a deficient number, since it is larger than the sum of its proper divisors (6679779).

207072157 is an equidigital number, since it uses as much as digits as its factorization.

207072157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6679778.

The product of its (nonzero) digits is 6860, while the sum is 31.

The square root of 207072157 is about 14390.0019805419. The cubic root of 207072157 is about 591.6168968341.

The spelling of 207072157 in words is "two hundred seven million, seventy-two thousand, one hundred fifty-seven".