61530200 has 24 divisors (see below), whose sum is σ = 143058180. Its totient is φ = 24612000.

The previous prime is 61530197. The next prime is 61530241. The reversal of 61530200 is 203516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 153626 + ... + 154025.

Almost surely, 2^61530200 is an apocalyptic number.

It is an amenable number.

61530200 is an abundant number, since it is smaller than the sum of its proper divisors (81527980).

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

61530200 is a wasteful number, since it uses less digits than its factorization.

61530200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307667 (or 307658 counting only the distinct ones).

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

The square root of 61530200 is about 7844.1188160303. The cubic root of 61530200 is about 394.7869384529.

Adding to 61530200 its reverse (203516), we get a palindrome (61733716).

The spelling of 61530200 in words is "sixty-one million, five hundred thirty thousand, two hundred".