61242901 has 4 divisors (see below), whose sum is σ = 61271404. Its totient is φ = 61214400.

The previous prime is 61242899. The next prime is 61242917. The reversal of 61242901 is 10924216.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27300625 + 33942276 = 5225^2 + 5826^2 .

It is a cyclic number.

It is not a de Polignac number, because 61242901 - 2¹ = 61242899 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 (61242001) 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, 10740 + ... + 15421.

It is an arithmetic number, because the mean of its divisors is an integer number (15317851).

Almost surely, 2^61242901 is an apocalyptic number.

It is an amenable number.

61242901 is a deficient number, since it is larger than the sum of its proper divisors (28503).

61242901 is a wasteful number, since it uses less digits than its factorization.

61242901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28502.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 61242901 is about 7825.7843696335. The cubic root of 61242901 is about 394.1715285503.

It can be divided in two parts, 6124 and 2901, that added together give a square (9025 = 95²).

The spelling of 61242901 in words is "sixty-one million, two hundred forty-two thousand, nine hundred one".