61305132 has 48 divisors (see below), whose sum is σ = 164245760. Its totient is φ = 17433792.

The previous prime is 61305131. The next prime is 61305149. The reversal of 61305132 is 23150316.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 61305099 and 61305108.

It is not an unprimeable number, because it can be changed into a prime (61305131) 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, 17643 + ... + 20829.

Almost surely, 2^61305132 is an apocalyptic number.

It is an amenable number.

61305132 is an abundant number, since it is smaller than the sum of its proper divisors (102940628).

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

61305132 is a wasteful number, since it uses less digits than its factorization.

61305132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3430 (or 3428 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 61305132 is about 7829.7593832761. The cubic root of 61305132 is about 394.3049937313.

Adding to 61305132 its reverse (23150316), we get a palindrome (84455448).

The spelling of 61305132 in words is "sixty-one million, three hundred five thousand, one hundred thirty-two".