61427571 has 4 divisors (see below), whose sum is σ = 81903432. Its totient is φ = 40951712.

The previous prime is 61427563. The next prime is 61427617. The reversal of 61427571 is 17572416.

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 61427571 - 2³ = 61427563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61427501) 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, 10237926 + ... + 10237931.

It is an arithmetic number, because the mean of its divisors is an integer number (20475858).

Almost surely, 2^61427571 is an apocalyptic number.

61427571 is a deficient number, since it is larger than the sum of its proper divisors (20475861).

61427571 is a wasteful number, since it uses less digits than its factorization.

61427571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20475860.

The product of its digits is 11760, while the sum is 33.

The square root of 61427571 is about 7837.5743058679. The cubic root of 61427571 is about 394.5673219822.

Adding to 61427571 its reverse (17572416), we get a palindrome (78999987).

The spelling of 61427571 in words is "sixty-one million, four hundred twenty-seven thousand, five hundred seventy-one".