61525469 has 2 divisors, whose sum is σ = 61525470. Its totient is φ = 61525468.

The previous prime is 61525459. The next prime is 61525489. The reversal of 61525469 is 96452516.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35259844 + 26265625 = 5938^2 + 5125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61525469 is a prime.

It is a super-2 number, since 2×61525469² = 7570766671339922, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61525459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30762734 + 30762735.

It is an arithmetic number, because the mean of its divisors is an integer number (30762735).

Almost surely, 2^61525469 is an apocalyptic number.

It is an amenable number.

61525469 is a deficient number, since it is larger than the sum of its proper divisors (1).

61525469 is an equidigital number, since it uses as much as digits as its factorization.

61525469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 38.

The square root of 61525469 is about 7843.8172467237. The cubic root of 61525469 is about 394.7768199264.

The spelling of 61525469 in words is "sixty-one million, five hundred twenty-five thousand, four hundred sixty-nine".