61415 has 8 divisors (see below), whose sum is σ = 75168. Its totient is φ = 48160.

The previous prime is 61409. The next prime is 61417. The reversal of 61415 is 51416.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-61415 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61393 and 61402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269 + ... + 441.

It is an arithmetic number, because the mean of its divisors is an integer number (9396).

2⁶¹⁴¹⁵ is an apocalyptic number.

61415 is a deficient number, since it is larger than the sum of its proper divisors (13753).

61415 is a wasteful number, since it uses less digits than its factorization.

61415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249.

The product of its digits is 120, while the sum is 17.

The square root of 61415 is about 247.8204995556. The cubic root of 61415 is about 39.4540404405.

Subtracting from 61415 its reverse (51416), we obtain a palindrome (9999).

The spelling of 61415 in words is "sixty-one thousand, four hundred fifteen".