61237889 has 2 divisors, whose sum is σ = 61237890. Its totient is φ = 61237888.

The previous prime is 61237873. The next prime is 61237901. The reversal of 61237889 is 98873216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34281025 + 26956864 = 5855^2 + 5192^2 .

It is a cyclic number.

It is not a de Polignac number, because 61237889 - 2⁴ = 61237873 is a prime.

It is not a weakly prime, because it can be changed into another prime (61237829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30618944 + 30618945.

It is an arithmetic number, because the mean of its divisors is an integer number (30618945).

Almost surely, 2^61237889 is an apocalyptic number.

It is an amenable number.

61237889 is a deficient number, since it is larger than the sum of its proper divisors (1).

61237889 is an equidigital number, since it uses as much as digits as its factorization.

61237889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 61237889 is about 7825.4641395894. The cubic root of 61237889 is about 394.1607755130.

It can be divided in two parts, 61237 and 889, that added together give a palindrome (62126).

The spelling of 61237889 in words is "sixty-one million, two hundred thirty-seven thousand, eight hundred eighty-nine".