61436530 has 16 divisors (see below), whose sum is σ = 110856024. Its totient is φ = 24514560.

The previous prime is 61436509. The next prime is 61436561. The reversal of 61436530 is 3563416.

It can be written as a sum of positive squares in 4 ways, for example, as 14280841 + 47155689 = 3779^2 + 6867^2 .

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, 3087 + ... + 11506.

Almost surely, 2^61436530 is an apocalyptic number.

61436530 is a deficient number, since it is larger than the sum of its proper divisors (49419494).

61436530 is a wasteful number, since it uses less digits than its factorization.

61436530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15021.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 61436530 is about 7838.1458266608. The cubic root of 61436530 is about 394.5865031455.

Adding to 61436530 its reverse (3563416), we get a palindrome (64999946).

The spelling of 61436530 in words is "sixty-one million, four hundred thirty-six thousand, five hundred thirty".