61427275 has 72 divisors (see below), whose sum is σ = 98755584. Its totient is φ = 37065600.

The previous prime is 61427269. The next prime is 61427279. The reversal of 61427275 is 57272416.

It is not a de Polignac number, because 61427275 - 2²¹ = 59330123 is a prime.

It is a super-2 number, since 2×61427275² = 7546620227851250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61427275.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61427279) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 916792 + ... + 916858.

Almost surely, 2^61427275 is an apocalyptic number.

61427275 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61427275 is a deficient number, since it is larger than the sum of its proper divisors (37328309).

61427275 is a wasteful number, since it uses less digits than its factorization.

61427275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 123 counting only the distinct ones).

The product of its digits is 23520, while the sum is 34.

The square root of 61427275 is about 7837.5554224516. Note that the first 3 decimals coincide. The cubic root of 61427275 is about 394.5666882163.

It can be divided in two parts, 614 and 27275, that added together give a square (27889 = 167²).

The spelling of 61427275 in words is "sixty-one million, four hundred twenty-seven thousand, two hundred seventy-five".