61232621 has 4 divisors (see below), whose sum is σ = 61316892. Its totient is φ = 61148352.

The previous prime is 61232597. The next prime is 61232629. The reversal of 61232621 is 12623216.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60762025 + 470596 = 7795^2 + 686^2 .

It is a cyclic number.

It is not a de Polignac number, because 61232621 - 2¹⁴ = 61216237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61232629) 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, 41036 + ... + 42501.

It is an arithmetic number, because the mean of its divisors is an integer number (15329223).

Almost surely, 2^61232621 is an apocalyptic number.

It is an amenable number.

61232621 is a deficient number, since it is larger than the sum of its proper divisors (84271).

61232621 is an equidigital number, since it uses as much as digits as its factorization.

61232621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84270.

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

The square root of 61232621 is about 7825.1275388967. The cubic root of 61232621 is about 394.1494726059.

Adding to 61232621 its reverse (12623216), we get a palindrome (73855837).

It can be divided in two parts, 612 and 32621, that added together give a palindrome (33233).

The spelling of 61232621 in words is "sixty-one million, two hundred thirty-two thousand, six hundred twenty-one".