61150520 has 32 divisors (see below), whose sum is σ = 138110400. Its totient is φ = 24367488.

The previous prime is 61150489. The next prime is 61150553. The reversal of 61150520 is 2505116.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 61150492 and 61150501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8321 + ... + 13839.

It is an arithmetic number, because the mean of its divisors is an integer number (4315950).

Almost surely, 2^61150520 is an apocalyptic number.

It is an amenable number.

61150520 is an abundant number, since it is smaller than the sum of its proper divisors (76959880).

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

61150520 is a wasteful number, since it uses less digits than its factorization.

61150520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5807 (or 5803 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 61150520 is about 7819.8797944725. The cubic root of 61150520 is about 393.9732346304.

Adding to 61150520 its reverse (2505116), we get a palindrome (63655636).

The spelling of 61150520 in words is "sixty-one million, one hundred fifty thousand, five hundred twenty".