61540332 has 48 divisors (see below), whose sum is σ = 169408512. Its totient is φ = 17015040.

The previous prime is 61540327. The next prime is 61540333. The reversal of 61540332 is 23304516.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61540333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9213 + ... + 14420.

It is an arithmetic number, because the mean of its divisors is an integer number (3529344).

Almost surely, 2^61540332 is an apocalyptic number.

61540332 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

61540332 is an abundant number, since it is smaller than the sum of its proper divisors (107868180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61540332 is a wasteful number, since it uses less digits than its factorization.

61540332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23678 (or 23676 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 61540332 is about 7844.7646236200. The cubic root of 61540332 is about 394.8086067379.

Adding to 61540332 its reverse (23304516), we get a palindrome (84844848).

The spelling of 61540332 in words is "sixty-one million, five hundred forty thousand, three hundred thirty-two".