61210563 has 4 divisors (see below), whose sum is σ = 81614088. Its totient is φ = 40807040.

The previous prime is 61210559. The next prime is 61210603. The reversal of 61210563 is 36501216.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61210563 - 2² = 61210559 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (61210763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10201758 + ... + 10201763.

It is an arithmetic number, because the mean of its divisors is an integer number (20403522).

Almost surely, 2^61210563 is an apocalyptic number.

61210563 is a deficient number, since it is larger than the sum of its proper divisors (20403525).

61210563 is a wasteful number, since it uses less digits than its factorization.

61210563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20403524.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 61210563 is about 7823.7179780460. The cubic root of 61210563 is about 394.1021383958.

Adding to 61210563 its reverse (36501216), we get a palindrome (97711779).

It can be divided in two parts, 612 and 10563, that added together give a triangular number (11175 = T₁₄₉).

The spelling of 61210563 in words is "sixty-one million, two hundred ten thousand, five hundred sixty-three".