61524997 has 8 divisors (see below), whose sum is σ = 63246744. Its totient is φ = 59824128.

The previous prime is 61524973. The next prime is 61525001. The reversal of 61524997 is 79942516.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 75076 + 61449921 = 274^2 + 7839^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61524997 - 2¹⁵ = 61492229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61524917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 853 + ... + 11125.

It is an arithmetic number, because the mean of its divisors is an integer number (7905843).

Almost surely, 2^61524997 is an apocalyptic number.

It is an amenable number.

61524997 is a deficient number, since it is larger than the sum of its proper divisors (1721747).

61524997 is a wasteful number, since it uses less digits than its factorization.

61524997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10439.

The product of its digits is 136080, while the sum is 43.

The square root of 61524997 is about 7843.7871592745. The cubic root of 61524997 is about 394.7758103979.

The spelling of 61524997 in words is "sixty-one million, five hundred twenty-four thousand, nine hundred ninety-seven".