61312461 has 16 divisors (see below), whose sum is σ = 93548544. Its totient is φ = 34990704.

The previous prime is 61312403. The next prime is 61312469. The reversal of 61312461 is 16421316.

It is not a de Polignac number, because 61312461 - 2¹⁴ = 61296077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61312469) 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, 21840 + ... + 24486.

It is an arithmetic number, because the mean of its divisors is an integer number (5846784).

Almost surely, 2^61312461 is an apocalyptic number.

It is an amenable number.

61312461 is a deficient number, since it is larger than the sum of its proper divisors (32236083).

61312461 is a wasteful number, since it uses less digits than its factorization.

61312461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3760.

The product of its digits is 864, while the sum is 24.

The square root of 61312461 is about 7830.2273913342. The cubic root of 61312461 is about 394.3207060980.

Adding to 61312461 its reverse (16421316), we get a palindrome (77733777).

The spelling of 61312461 in words is "sixty-one million, three hundred twelve thousand, four hundred sixty-one".