61474489 has 2 divisors, whose sum is σ = 61474490. Its totient is φ = 61474488.

The previous prime is 61474471. The next prime is 61474493. The reversal of 61474489 is 98447416.

61474489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43454464 + 18020025 = 6592^2 + 4245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61474489 is a prime.

It is a super-2 number, since 2×61474489² = 7558225595622242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61474289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30737244 + 30737245.

It is an arithmetic number, because the mean of its divisors is an integer number (30737245).

Almost surely, 2^61474489 is an apocalyptic number.

It is an amenable number.

61474489 is a deficient number, since it is larger than the sum of its proper divisors (1).

61474489 is an equidigital number, since it uses as much as digits as its factorization.

61474489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 43.

The square root of 61474489 is about 7840.5668800158. The cubic root of 61474489 is about 394.6677524465.

The spelling of 61474489 in words is "sixty-one million, four hundred seventy-four thousand, four hundred eighty-nine".