61162571 has 2 divisors, whose sum is σ = 61162572. Its totient is φ = 61162570.

The previous prime is 61162561. The next prime is 61162579. The reversal of 61162571 is 17526116.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61162571 is a prime.

It is a super-5 number, since 5×61162571⁵ (a number of 40 digits) contains 55555 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61162579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30581285 + 30581286.

It is an arithmetic number, because the mean of its divisors is an integer number (30581286).

Almost surely, 2^61162571 is an apocalyptic number.

61162571 is a deficient number, since it is larger than the sum of its proper divisors (1).

61162571 is an equidigital number, since it uses as much as digits as its factorization.

61162571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 29.

The square root of 61162571 is about 7820.6502926547. The cubic root of 61162571 is about 393.9991131762. Note that the first 3 decimals are identical.

Adding to 61162571 its reverse (17526116), we get a palindrome (78688687).

It can be divided in two parts, 61 and 162571, that multiplied together give a triangular number (9916831 = T₄₄₅₃).

The spelling of 61162571 in words is "sixty-one million, one hundred sixty-two thousand, five hundred seventy-one".