61378127 has 4 divisors (see below), whose sum is σ = 61450440. Its totient is φ = 61305816.

The previous prime is 61378117. The next prime is 61378133. The reversal of 61378127 is 72187316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61378127 - 2⁴ = 61378111 is a prime.

It is a super-3 number, since 3×61378127³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61378117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34868 + ... + 36585.

It is an arithmetic number, because the mean of its divisors is an integer number (15362610).

Almost surely, 2^61378127 is an apocalyptic number.

61378127 is a deficient number, since it is larger than the sum of its proper divisors (72313).

61378127 is an equidigital number, since it uses as much as digits as its factorization.

61378127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72312.

The product of its digits is 14112, while the sum is 35.

The square root of 61378127 is about 7834.4193786138. The cubic root of 61378127 is about 394.4614291231.

The spelling of 61378127 in words is "sixty-one million, three hundred seventy-eight thousand, one hundred twenty-seven".