61352020 has 12 divisors (see below), whose sum is σ = 128839284. Its totient is φ = 24540800.

The previous prime is 61352003. The next prime is 61352021. The reversal of 61352020 is 2025316.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 47941776 + 13410244 = 6924^2 + 3662^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61352021) 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, 1533781 + ... + 1533820.

It is an arithmetic number, because the mean of its divisors is an integer number (10736607).

Almost surely, 2^61352020 is an apocalyptic number.

It is an amenable number.

61352020 is an abundant number, since it is smaller than the sum of its proper divisors (67487264).

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

61352020 is a wasteful number, since it uses less digits than its factorization.

61352020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3067610 (or 3067608 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 61352020 is about 7832.7530281504. The cubic root of 61352020 is about 394.4054935345.

Adding to 61352020 its reverse (2025316), we get a palindrome (63377336).

The spelling of 61352020 in words is "sixty-one million, three hundred fifty-two thousand, twenty".