157828871 has 2 divisors, whose sum is σ = 157828872. Its totient is φ = 157828870.

The previous prime is 157828837. The next prime is 157828873. The reversal of 157828871 is 178828751.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157828871 is a prime.

It is a super-2 number, since 2×157828871² = 49819905042269282, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 157828873, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157828873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78914435 + 78914436.

It is an arithmetic number, because the mean of its divisors is an integer number (78914436).

Almost surely, 2^157828871 is an apocalyptic number.

157828871 is a deficient number, since it is larger than the sum of its proper divisors (1).

157828871 is an equidigital number, since it uses as much as digits as its factorization.

157828871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 250880, while the sum is 47.

The square root of 157828871 is about 12562.9960996571. The cubic root of 157828871 is about 540.4167690208.

The spelling of 157828871 in words is "one hundred fifty-seven million, eight hundred twenty-eight thousand, eight hundred seventy-one".