61525072 has 20 divisors (see below), whose sum is σ = 136234336. Its totient is φ = 26367840.

The previous prime is 61525039. The next prime is 61525099. The reversal of 61525072 is 27052516.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 61525072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274554 + ... + 274777.

Almost surely, 2^61525072 is an apocalyptic number.

It is an amenable number.

61525072 is an abundant number, since it is smaller than the sum of its proper divisors (74709264).

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

61525072 is a wasteful number, since it uses less digits than its factorization.

61525072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549346 (or 549340 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 61525072 is about 7843.7919401269. The cubic root of 61525072 is about 394.7759708106.

Adding to 61525072 its reverse (27052516), we get a palindrome (88577588).

The spelling of 61525072 in words is "sixty-one million, five hundred twenty-five thousand, seventy-two".