61525247 has 4 divisors (see below), whose sum is σ = 70314576. Its totient is φ = 52735920.

The previous prime is 61525241. The next prime is 61525273. The reversal of 61525247 is 74252516.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61525247 - 2¹⁶ = 61459711 is a prime.

It is a super-2 number, since 2×61525247² = 7570712036822018, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61525241) 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, 4394654 + ... + 4394667.

It is an arithmetic number, because the mean of its divisors is an integer number (17578644).

Almost surely, 2^61525247 is an apocalyptic number.

61525247 is a deficient number, since it is larger than the sum of its proper divisors (8789329).

61525247 is an equidigital number, since it uses as much as digits as its factorization.

61525247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8789328.

The product of its digits is 16800, while the sum is 32.

The square root of 61525247 is about 7843.8030954378. The cubic root of 61525247 is about 394.7763451064.

The spelling of 61525247 in words is "sixty-one million, five hundred twenty-five thousand, two hundred forty-seven".