61222757 has 6 divisors (see below), whose sum is σ = 64000902. Its totient is φ = 58560392.

The previous prime is 61222747. The next prime is 61222771. The reversal of 61222757 is 75722216.

It can be written as a sum of positive squares in only one way, i.e., 36312676 + 24910081 = 6026^2 + 4991^2 .

It is not a de Polignac number, because 61222757 - 2¹⁶ = 61157221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61222747) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57338 + ... + 58395.

It is an arithmetic number, because the mean of its divisors is an integer number (10666817).

Almost surely, 2^61222757 is an apocalyptic number.

It is an amenable number.

61222757 is a deficient number, since it is larger than the sum of its proper divisors (2778145).

61222757 is a wasteful number, since it uses less digits than its factorization.

61222757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115779 (or 115756 counting only the distinct ones).

The product of its digits is 11760, while the sum is 32.

The square root of 61222757 is about 7824.4972362446. The cubic root of 61222757 is about 394.1283068769.

The spelling of 61222757 in words is "sixty-one million, two hundred twenty-two thousand, seven hundred fifty-seven".