61705051 has 4 divisors (see below), whose sum is σ = 61997704. Its totient is φ = 61412400.

The previous prime is 61705003. The next prime is 61705151. The reversal of 61705051 is 15050716.

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 61705051 - 2¹¹ = 61703003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61705151) 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, 146010 + ... + 146431.

It is an arithmetic number, because the mean of its divisors is an integer number (15499426).

Almost surely, 2^61705051 is an apocalyptic number.

61705051 is a deficient number, since it is larger than the sum of its proper divisors (292653).

61705051 is a wasteful number, since it uses less digits than its factorization.

61705051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292652.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 61705051 is about 7855.2562657115. The cubic root of 61705051 is about 395.1605414820.

Adding to 61705051 its reverse (15050716), we get a palindrome (76755767).

The spelling of 61705051 in words is "sixty-one million, seven hundred five thousand, fifty-one".