61273087 has 2 divisors, whose sum is σ = 61273088. Its totient is φ = 61273086.

The previous prime is 61273067. The next prime is 61273099. The reversal of 61273087 is 78037216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61273087 - 2¹¹ = 61271039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61273067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30636543 + 30636544.

It is an arithmetic number, because the mean of its divisors is an integer number (30636544).

Almost surely, 2^61273087 is an apocalyptic number.

61273087 is a deficient number, since it is larger than the sum of its proper divisors (1).

61273087 is an equidigital number, since it uses as much as digits as its factorization.

61273087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 61273087 is about 7827.7127566103. The cubic root of 61273087 is about 394.2362789525.

The spelling of 61273087 in words is "sixty-one million, two hundred seventy-three thousand, eighty-seven".