61545263 has 8 divisors (see below), whose sum is σ = 69161568. Its totient is φ = 54340704.

The previous prime is 61545227. The next prime is 61545271. The reversal of 61545263 is 36254516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61545263 - 2⁸ = 61545007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61545203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102620 + ... + 103217.

It is an arithmetic number, because the mean of its divisors is an integer number (8645196).

Almost surely, 2^61545263 is an apocalyptic number.

61545263 is a deficient number, since it is larger than the sum of its proper divisors (7616305).

61545263 is a wasteful number, since it uses less digits than its factorization.

61545263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205873.

The product of its digits is 21600, while the sum is 32.

The square root of 61545263 is about 7845.0789033636. The cubic root of 61545263 is about 394.8191513091.

Adding to 61545263 its reverse (36254516), we get a palindrome (97799779).

The spelling of 61545263 in words is "sixty-one million, five hundred forty-five thousand, two hundred sixty-three".