61528263 has 4 divisors (see below), whose sum is σ = 82037688. Its totient is φ = 41018840.

The previous prime is 61528261. The next prime is 61528277. The reversal of 61528263 is 36282516.

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 61528263 - 2¹ = 61528261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61528261) 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, 10254708 + ... + 10254713.

It is an arithmetic number, because the mean of its divisors is an integer number (20509422).

Almost surely, 2^61528263 is an apocalyptic number.

61528263 is a deficient number, since it is larger than the sum of its proper divisors (20509425).

61528263 is a wasteful number, since it uses less digits than its factorization.

61528263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20509424.

The product of its digits is 17280, while the sum is 33.

The square root of 61528263 is about 7843.9953467605. The cubic root of 61528263 is about 394.7827957158.

The spelling of 61528263 in words is "sixty-one million, five hundred twenty-eight thousand, two hundred sixty-three".