61204543 has 2 divisors, whose sum is σ = 61204544. Its totient is φ = 61204542.

The previous prime is 61204511. The next prime is 61204547. The reversal of 61204543 is 34540216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61204543 - 2⁵ = 61204511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61204547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30602271 + 30602272.

It is an arithmetic number, because the mean of its divisors is an integer number (30602272).

Almost surely, 2^61204543 is an apocalyptic number.

61204543 is a deficient number, since it is larger than the sum of its proper divisors (1).

61204543 is an equidigital number, since it uses as much as digits as its factorization.

61204543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 61204543 is about 7823.3332410169. Note that the first 3 decimals coincide. The cubic root of 61204543 is about 394.0892181168.

Adding to 61204543 its reverse (34540216), we get a palindrome (95744759).

The spelling of 61204543 in words is "sixty-one million, two hundred four thousand, five hundred forty-three".