61421063 has 16 divisors (see below), whose sum is σ = 70626816. Its totient is φ = 52868640.

The previous prime is 61421047. The next prime is 61421089. The reversal of 61421063 is 36012416.

It is a happy number.

61421063 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61421063 - 2⁴ = 61421047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61421023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24881 + ... + 27237.

It is an arithmetic number, because the mean of its divisors is an integer number (4414176).

Almost surely, 2^61421063 is an apocalyptic number.

61421063 is a deficient number, since it is larger than the sum of its proper divisors (9205753).

61421063 is a wasteful number, since it uses less digits than its factorization.

61421063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2494.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 61421063 is about 7837.1591153938. The cubic root of 61421063 is about 394.5533872253.

Adding to 61421063 its reverse (36012416), we get a palindrome (97433479).

It can be divided in two parts, 61 and 421063, that added together give a palindrome (421124).

The spelling of 61421063 in words is "sixty-one million, four hundred twenty-one thousand, sixty-three".