61249159 has 2 divisors, whose sum is σ = 61249160. Its totient is φ = 61249158.

The previous prime is 61249109. The next prime is 61249163. The reversal of 61249159 is 95194216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61249159 - 2⁷ = 61249031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61249109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30624579 + 30624580.

It is an arithmetic number, because the mean of its divisors is an integer number (30624580).

Almost surely, 2^61249159 is an apocalyptic number.

61249159 is a deficient number, since it is larger than the sum of its proper divisors (1).

61249159 is an equidigital number, since it uses as much as digits as its factorization.

61249159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 37.

The square root of 61249159 is about 7826.1841915457. The cubic root of 61249159 is about 394.1849540052.

The spelling of 61249159 in words is "sixty-one million, two hundred forty-nine thousand, one hundred fifty-nine".