61889153 has 4 divisors (see below), whose sum is σ = 62672640. Its totient is φ = 61105668.

The previous prime is 61889147. The next prime is 61889189. The reversal of 61889153 is 35198816.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61889153 - 2¹⁸ = 61627009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61889153.

It is not an unprimeable number, because it can be changed into a prime (61889143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391625 + ... + 391782.

It is an arithmetic number, because the mean of its divisors is an integer number (15668160).

Almost surely, 2^61889153 is an apocalyptic number.

It is an amenable number.

61889153 is a deficient number, since it is larger than the sum of its proper divisors (783487).

61889153 is an equidigital number, since it uses as much as digits as its factorization.

61889153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783486.

The product of its digits is 51840, while the sum is 41.

The square root of 61889153 is about 7866.9659335731. The cubic root of 61889153 is about 395.5531490716.

The spelling of 61889153 in words is "sixty-one million, eight hundred eighty-nine thousand, one hundred fifty-three".