61520352 has 24 divisors (see below), whose sum is σ = 161491176. Its totient is φ = 20506752.

The previous prime is 61520341. The next prime is 61520353. The reversal of 61520352 is 25302516.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61520353) 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, 320323 + ... + 320514.

It is an arithmetic number, because the mean of its divisors is an integer number (6728799).

Almost surely, 2^61520352 is an apocalyptic number.

It is an amenable number.

61520352 is an abundant number, since it is smaller than the sum of its proper divisors (99970824).

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

61520352 is a wasteful number, since it uses less digits than its factorization.

61520352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640850 (or 640842 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 61520352 is about 7843.4910594709. The cubic root of 61520352 is about 394.7658752503.

Adding to 61520352 its reverse (25302516), we get a palindrome (86822868).

The spelling of 61520352 in words is "sixty-one million, five hundred twenty thousand, three hundred fifty-two".