61011959 has 4 divisors (see below), whose sum is σ = 62046120. Its totient is φ = 59977800.

The previous prime is 61011953. The next prime is 61011961. The reversal of 61011959 is 95911016.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 61011959 - 2¹⁶ = 60946423 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 (61011953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516992 + ... + 517109.

It is an arithmetic number, because the mean of its divisors is an integer number (15511530).

Almost surely, 2^61011959 is an apocalyptic number.

61011959 is a deficient number, since it is larger than the sum of its proper divisors (1034161).

61011959 is a wasteful number, since it uses less digits than its factorization.

61011959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034160.

The product of its (nonzero) digits is 2430, while the sum is 32.

The square root of 61011959 is about 7811.0152349102. The cubic root of 61011959 is about 393.6754415308.

The spelling of 61011959 in words is "sixty-one million, eleven thousand, nine hundred fifty-nine".