61532099 has 4 divisors (see below), whose sum is σ = 62693136. Its totient is φ = 60371064.

The previous prime is 61532087. The next prime is 61532101. The reversal of 61532099 is 99023516.

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 61532099 - 2⁸ = 61531843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61532039) 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, 580439 + ... + 580544.

It is an arithmetic number, because the mean of its divisors is an integer number (15673284).

Almost surely, 2^61532099 is an apocalyptic number.

61532099 is a deficient number, since it is larger than the sum of its proper divisors (1161037).

61532099 is a wasteful number, since it uses less digits than its factorization.

61532099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161036.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 61532099 is about 7844.2398611975. The cubic root of 61532099 is about 394.7909998335.

The spelling of 61532099 in words is "sixty-one million, five hundred thirty-two thousand, ninety-nine".