61254621 has 24 divisors (see below), whose sum is σ = 94568760. Its totient is φ = 38071296.

The previous prime is 61254619. The next prime is 61254631. The reversal of 61254621 is 12645216.

61254621 is a `hidden beast` number, since 612 + 5 + 46 + 2 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8328996 + 52925625 = 2886^2 + 7275^2 .

It is not a de Polignac number, because 61254621 - 2¹ = 61254619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61254631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14841 + ... + 18513.

It is an arithmetic number, because the mean of its divisors is an integer number (3940365).

Almost surely, 2^61254621 is an apocalyptic number.

It is an amenable number.

61254621 is a deficient number, since it is larger than the sum of its proper divisors (33314139).

61254621 is a wasteful number, since it uses less digits than its factorization.

61254621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3805 (or 3802 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 61254621 is about 7826.5331405419. The cubic root of 61254621 is about 394.1966710326.

Adding to 61254621 its reverse (12645216), we get a palindrome (73899837).

The spelling of 61254621 in words is "sixty-one million, two hundred fifty-four thousand, six hundred twenty-one".