227520157 has 2 divisors, whose sum is σ = 227520158. Its totient is φ = 227520156.

The previous prime is 227520133. The next prime is 227520187. The reversal of 227520157 is 751025722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181198521 + 46321636 = 13461^2 + 6806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-227520157 is a prime.

It is a super-3 number, since 3×227520157³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227520187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113760078 + 113760079.

It is an arithmetic number, because the mean of its divisors is an integer number (113760079).

Almost surely, 2^227520157 is an apocalyptic number.

It is an amenable number.

227520157 is a deficient number, since it is larger than the sum of its proper divisors (1).

227520157 is an equidigital number, since it uses as much as digits as its factorization.

227520157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 227520157 is about 15083.7713122415. The cubic root of 227520157 is about 610.4826038419.

Adding to 227520157 its reverse (751025722), we get a palindrome (978545879).

The spelling of 227520157 in words is "two hundred twenty-seven million, five hundred twenty thousand, one hundred fifty-seven".