61534273 has 2 divisors, whose sum is σ = 61534274. Its totient is φ = 61534272.

The previous prime is 61534189. The next prime is 61534303. The reversal of 61534273 is 37243516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37051569 + 24482704 = 6087^2 + 4948^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61534273 is a prime.

It is not a weakly prime, because it can be changed into another prime (61534573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30767136 + 30767137.

It is an arithmetic number, because the mean of its divisors is an integer number (30767137).

Almost surely, 2^61534273 is an apocalyptic number.

It is an amenable number.

61534273 is a deficient number, since it is larger than the sum of its proper divisors (1).

61534273 is an equidigital number, since it uses as much as digits as its factorization.

61534273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 31.

The square root of 61534273 is about 7844.3784329926. The cubic root of 61534273 is about 394.7956492525.

Adding to 61534273 its reverse (37243516), we get a palindrome (98777789).

The spelling of 61534273 in words is "sixty-one million, five hundred thirty-four thousand, two hundred seventy-three".