61016651 has 4 divisors (see below), whose sum is σ = 62504904. Its totient is φ = 59528400.

The previous prime is 61016647. The next prime is 61016707. The reversal of 61016651 is 15661016.

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 61016651 - 2² = 61016647 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 61016651.

It is not an unprimeable number, because it can be changed into a prime (61015651) 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, 744065 + ... + 744146.

It is an arithmetic number, because the mean of its divisors is an integer number (15626226).

Almost surely, 2^61016651 is an apocalyptic number.

61016651 is a deficient number, since it is larger than the sum of its proper divisors (1488253).

61016651 is a wasteful number, since it uses less digits than its factorization.

61016651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488252.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 61016651 is about 7811.3155742167. The cubic root of 61016651 is about 393.6855328739.

Adding to 61016651 its reverse (15661016), we get a palindrome (76677667).

It can be divided in two parts, 6 and 1016651, that multiplied together give a palindrome (6099906).

The spelling of 61016651 in words is "sixty-one million, sixteen thousand, six hundred fifty-one".