61003121 has 8 divisors (see below), whose sum is σ = 64181544. Its totient is φ = 57905280.

The previous prime is 61003097. The next prime is 61003127. The reversal of 61003121 is 12130016.

It can be written as a sum of positive squares in 4 ways, for example, as 5664400 + 55338721 = 2380^2 + 7439^2 .

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 61003121 - 2⁶ = 61003057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61003096 and 61003105.

It is not an unprimeable number, because it can be changed into a prime (61003127) 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, 18590 + ... + 21623.

It is an arithmetic number, because the mean of its divisors is an integer number (8022693).

Almost surely, 2^61003121 is an apocalyptic number.

It is an amenable number.

61003121 is a deficient number, since it is larger than the sum of its proper divisors (3178423).

61003121 is a wasteful number, since it uses less digits than its factorization.

61003121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40291.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 61003121 is about 7810.4494749022. The cubic root of 61003121 is about 393.6564317518.

Adding to 61003121 its reverse (12130016), we get a palindrome (73133137).

The spelling of 61003121 in words is "sixty-one million, three thousand, one hundred twenty-one".