61734557 has 2 divisors, whose sum is σ = 61734558. Its totient is φ = 61734556.

The previous prime is 61734527. The next prime is 61734577. The reversal of 61734557 is 75543716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53860921 + 7873636 = 7339^2 + 2806^2 .

It is a cyclic number.

It is not a de Polignac number, because 61734557 - 2⁶ = 61734493 is a prime.

It is a super-2 number, since 2×61734557² = 7622311055972498, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61734557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61734527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30867278 + 30867279.

It is an arithmetic number, because the mean of its divisors is an integer number (30867279).

Almost surely, 2^61734557 is an apocalyptic number.

It is an amenable number.

61734557 is a deficient number, since it is larger than the sum of its proper divisors (1).

61734557 is an equidigital number, since it uses as much as digits as its factorization.

61734557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88200, while the sum is 38.

The square root of 61734557 is about 7857.1341467484. The cubic root of 61734557 is about 395.2235171422.

The spelling of 61734557 in words is "sixty-one million, seven hundred thirty-four thousand, five hundred fifty-seven".