61053520 has 40 divisors (see below), whose sum is σ = 154856160. Its totient is φ = 22200960.

The previous prime is 61053481. The next prime is 61053527. The reversal of 61053520 is 2535016.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 61053491 and 61053500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61053527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33810 + ... + 35569.

It is an arithmetic number, because the mean of its divisors is an integer number (3871404).

Almost surely, 2^61053520 is an apocalyptic number.

It is an amenable number.

61053520 is an abundant number, since it is smaller than the sum of its proper divisors (93802640).

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

61053520 is a wasteful number, since it uses less digits than its factorization.

61053520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69403 (or 69397 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 61053520 is about 7813.6751916112. The cubic root of 61053520 is about 393.7648110663.

Adding to 61053520 its reverse (2535016), we get a palindrome (63588536).

The spelling of 61053520 in words is "sixty-one million, fifty-three thousand, five hundred twenty".