61250591 has 2 divisors, whose sum is σ = 61250592. Its totient is φ = 61250590.

The previous prime is 61250573. The next prime is 61250611. The reversal of 61250591 is 19505216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61250591 - 2¹⁰ = 61249567 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61250521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30625295 + 30625296.

It is an arithmetic number, because the mean of its divisors is an integer number (30625296).

Almost surely, 2^61250591 is an apocalyptic number.

61250591 is a deficient number, since it is larger than the sum of its proper divisors (1).

61250591 is an equidigital number, since it uses as much as digits as its factorization.

61250591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 61250591 is about 7826.2756787632. The cubic root of 61250591 is about 394.1880259845.

The spelling of 61250591 in words is "sixty-one million, two hundred fifty thousand, five hundred ninety-one".