61536451 has 2 divisors, whose sum is σ = 61536452. Its totient is φ = 61536450.

The previous prime is 61536443. The next prime is 61536479. The reversal of 61536451 is 15463516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61536451 - 2³ = 61536443 is a prime.

It is not a weakly prime, because it can be changed into another prime (61536401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30768225 + 30768226.

It is an arithmetic number, because the mean of its divisors is an integer number (30768226).

Almost surely, 2^61536451 is an apocalyptic number.

61536451 is a deficient number, since it is larger than the sum of its proper divisors (1).

61536451 is an equidigital number, since it uses as much as digits as its factorization.

61536451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 31.

The square root of 61536451 is about 7844.5172572951. The cubic root of 61536451 is about 394.8003071162.

Adding to 61536451 its reverse (15463516), we get a palindrome (76999967).

The spelling of 61536451 in words is "sixty-one million, five hundred thirty-six thousand, four hundred fifty-one".