101520157 has 2 divisors, whose sum is σ = 101520158. Its totient is φ = 101520156.

The previous prime is 101520121. The next prime is 101520161. The reversal of 101520157 is 751025101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81974916 + 19545241 = 9054^2 + 4421^2 .

It is a cyclic number.

It is not a de Polignac number, because 101520157 - 2¹⁵ = 101487389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101520187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50760078 + 50760079.

It is an arithmetic number, because the mean of its divisors is an integer number (50760079).

Almost surely, 2^101520157 is an apocalyptic number.

It is an amenable number.

101520157 is a deficient number, since it is larger than the sum of its proper divisors (1).

101520157 is an equidigital number, since it uses as much as digits as its factorization.

101520157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 101520157 is about 10075.7211652566. The cubic root of 101520157 is about 466.4990463195.

Adding to 101520157 its reverse (751025101), we get a palindrome (852545258).

The spelling of 101520157 in words is "one hundred one million, five hundred twenty thousand, one hundred fifty-seven".