61421049 has 6 divisors (see below), whose sum is σ = 88719306. Its totient is φ = 40947360.

The previous prime is 61421047. The next prime is 61421089. The reversal of 61421049 is 94012416.

61421049 is a `hidden beast` number, since 614 + 2 + 1 + 0 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 34047225 + 27373824 = 5835^2 + 5232^2 .

It is not a de Polignac number, because 61421049 - 2¹ = 61421047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61421047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3412272 + ... + 3412289.

It is an arithmetic number, because the mean of its divisors is an integer number (14786551).

Almost surely, 2^61421049 is an apocalyptic number.

It is an amenable number.

61421049 is a deficient number, since it is larger than the sum of its proper divisors (27298257).

61421049 is a wasteful number, since it uses less digits than its factorization.

61421049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6824567 (or 6824564 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 61421049 is about 7837.1582222129. The cubic root of 61421049 is about 394.5533572478.

The spelling of 61421049 in words is "sixty-one million, four hundred twenty-one thousand, forty-nine".