611422157 has 2 divisors, whose sum is σ = 611422158. Its totient is φ = 611422156.

The previous prime is 611422139. The next prime is 611422171. The reversal of 611422157 is 751224116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370986121 + 240436036 = 19261^2 + 15506^2 .

It is a cyclic number.

It is not a de Polignac number, because 611422157 - 2¹⁶ = 611356621 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611422657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305711078 + 305711079.

It is an arithmetic number, because the mean of its divisors is an integer number (305711079).

Almost surely, 2^611422157 is an apocalyptic number.

It is an amenable number.

611422157 is a deficient number, since it is larger than the sum of its proper divisors (1).

611422157 is an equidigital number, since it uses as much as digits as its factorization.

611422157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 29.

The square root of 611422157 is about 24726.9520361892. The cubic root of 611422157 is about 848.7511797416.

The spelling of 611422157 in words is "six hundred eleven million, four hundred twenty-two thousand, one hundred fifty-seven".