61400512 has 14 divisors (see below), whose sum is σ = 121841768. Its totient is φ = 30700224.

The previous prime is 61400509. The next prime is 61400513. The reversal of 61400512 is 21500416.

It is a self number, because there is not a number n which added to its sum of digits gives 61400512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61400513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 479628 + ... + 479755.

Almost surely, 2^61400512 is an apocalyptic number.

It is an amenable number.

61400512 is a deficient number, since it is larger than the sum of its proper divisors (60441256).

61400512 is an equidigital number, since it uses as much as digits as its factorization.

61400512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959395 (or 959385 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 61400512 is about 7835.8478800957. The cubic root of 61400512 is about 394.5093775062.

Adding to 61400512 its reverse (21500416), we get a palindrome (82900928).

The spelling of 61400512 in words is "sixty-one million, four hundred thousand, five hundred twelve".