61044420 has 48 divisors (see below), whose sum is σ = 176823360. Its totient is φ = 15716736.

The previous prime is 61044419. The next prime is 61044421. The reversal of 61044420 is 2444016.

It is an interprime number because it is at equal distance from previous prime (61044419) and next prime (61044421).

It is not an unprimeable number, because it can be changed into a prime (61044421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15802 + ... + 19281.

It is an arithmetic number, because the mean of its divisors is an integer number (3683820).

Almost surely, 2^61044420 is an apocalyptic number.

61044420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61044420 is an abundant number, since it is smaller than the sum of its proper divisors (115778940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61044420 is a wasteful number, since it uses less digits than its factorization.

61044420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35124 (or 35122 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 61044420 is about 7813.0928575053. The cubic root of 61044420 is about 393.7452466042.

Adding to 61044420 its reverse (2444016), we get a palindrome (63488436).

The spelling of 61044420 in words is "sixty-one million, forty-four thousand, four hundred twenty".