61411751 has 4 divisors (see below), whose sum is σ = 62718432. Its totient is φ = 60105072.

The previous prime is 61411733. The next prime is 61411807. The reversal of 61411751 is 15711416.

61411751 = 1120² + 1121² + ... + 1166².

It is a happy number.

61411751 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61411751 - 2¹⁸ = 61149607 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 61411751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61401751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653270 + ... + 653363.

It is an arithmetic number, because the mean of its divisors is an integer number (15679608).

Almost surely, 2^61411751 is an apocalyptic number.

61411751 is a deficient number, since it is larger than the sum of its proper divisors (1306681).

61411751 is a wasteful number, since it uses less digits than its factorization.

61411751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306680.

The product of its digits is 840, while the sum is 26.

The square root of 61411751 is about 7836.5650000494. The cubic root of 61411751 is about 394.5334469059.

The spelling of 61411751 in words is "sixty-one million, four hundred eleven thousand, seven hundred fifty-one".