61533125 has 10 divisors (see below), whose sum is σ = 76892574. Its totient is φ = 49226000.

The previous prime is 61533107. The next prime is 61533137. The reversal of 61533125 is 52133516.

It can be written as a sum of positive squares in 5 ways, for example, as 7392961 + 54140164 = 2719^2 + 7358^2 .

It is not a de Polignac number, because 61533125 - 2⁸ = 61532869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61533094 and 61533103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 48602 + ... + 49851.

Almost surely, 2^61533125 is an apocalyptic number.

It is an amenable number.

61533125 is a deficient number, since it is larger than the sum of its proper divisors (15359449).

61533125 is an frugal number, since it uses more digits than its factorization.

61533125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98473 (or 98458 counting only the distinct ones).

The product of its digits is 2700, while the sum is 26.

The square root of 61533125 is about 7844.3052592311. The cubic root of 61533125 is about 394.7931940991.

The spelling of 61533125 in words is "sixty-one million, five hundred thirty-three thousand, one hundred twenty-five".