61653011 has 4 divisors (see below), whose sum is σ = 70460592. Its totient is φ = 52845432.

The previous prime is 61652993. The next prime is 61653023. The reversal of 61653011 is 11035616.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61653011 is a prime.

It is a super-2 number, since 2×61653011² = 7602187530732242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61653061) 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, 4403780 + ... + 4403793.

It is an arithmetic number, because the mean of its divisors is an integer number (17615148).

Almost surely, 2^61653011 is an apocalyptic number.

61653011 is a deficient number, since it is larger than the sum of its proper divisors (8807581).

61653011 is an equidigital number, since it uses as much as digits as its factorization.

61653011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8807580.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 61653011 is about 7851.9431353010. The cubic root of 61653011 is about 395.0494217924.

Adding to 61653011 its reverse (11035616), we get a palindrome (72688627).

The spelling of 61653011 in words is "sixty-one million, six hundred fifty-three thousand, eleven".