61500230 has 16 divisors (see below), whose sum is σ = 120764304. Its totient is φ = 22363680.

The previous prime is 61500223. The next prime is 61500251. The reversal of 61500230 is 3200516.

It is a junction number, because it is equal to n+sod(n) for n = 61500199 and 61500208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279437 + ... + 279656.

It is an arithmetic number, because the mean of its divisors is an integer number (7547769).

Almost surely, 2^61500230 is an apocalyptic number.

61500230 is a deficient number, since it is larger than the sum of its proper divisors (59264074).

61500230 is a wasteful number, since it uses less digits than its factorization.

61500230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559111.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 61500230 is about 7842.2082349298. The cubic root of 61500230 is about 394.7228307136.

Adding to 61500230 its reverse (3200516), we get a palindrome (64700746).

The spelling of 61500230 in words is "sixty-one million, five hundred thousand, two hundred thirty".