61287097 has 2 divisors, whose sum is σ = 61287098. Its totient is φ = 61287096.

The previous prime is 61287071. The next prime is 61287113. The reversal of 61287097 is 79078216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34857216 + 26429881 = 5904^2 + 5141^2 .

It is a cyclic number.

It is not a de Polignac number, because 61287097 - 2¹⁵ = 61254329 is a prime.

It is a super-2 number, since 2×61287097² = 7512216517374818, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61287007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30643548 + 30643549.

It is an arithmetic number, because the mean of its divisors is an integer number (30643549).

Almost surely, 2^61287097 is an apocalyptic number.

It is an amenable number.

61287097 is a deficient number, since it is larger than the sum of its proper divisors (1).

61287097 is an equidigital number, since it uses as much as digits as its factorization.

61287097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 61287097 is about 7828.6076028883. The cubic root of 61287097 is about 394.2663238419.

It can be divided in two parts, 6128 and 7097, that added together give a square (13225 = 115²).

The spelling of 61287097 in words is "sixty-one million, two hundred eighty-seven thousand, ninety-seven".