61421135 has 8 divisors (see below), whose sum is σ = 73779360. Its totient is φ = 49087584.

The previous prime is 61421123. The next prime is 61421179. The reversal of 61421135 is 53112416.

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 61421135 - 2¹⁶ = 61355599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61421135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155 + ... + 11084.

It is an arithmetic number, because the mean of its divisors is an integer number (9222420).

Almost surely, 2^61421135 is an apocalyptic number.

61421135 is a deficient number, since it is larger than the sum of its proper divisors (12358225).

61421135 is a wasteful number, since it uses less digits than its factorization.

61421135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12337.

The product of its digits is 720, while the sum is 23.

The square root of 61421135 is about 7837.1637088937. The cubic root of 61421135 is about 394.5535413951.

The spelling of 61421135 in words is "sixty-one million, four hundred twenty-one thousand, one hundred thirty-five".