61818053 has 24 divisors (see below), whose sum is σ = 71500800. Its totient is φ = 53333280.

The previous prime is 61818011. The next prime is 61818059. The reversal of 61818053 is 35081816.

It is not a de Polignac number, because 61818053 - 2⁶ = 61817989 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 (61818059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 277100 + ... + 277322.

It is an arithmetic number, because the mean of its divisors is an integer number (2979200).

Almost surely, 2^61818053 is an apocalyptic number.

It is an amenable number.

61818053 is a deficient number, since it is larger than the sum of its proper divisors (9682747).

61818053 is a wasteful number, since it uses less digits than its factorization.

61818053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 61818053 is about 7862.4457390814. The cubic root of 61818053 is about 395.4016168336.

Adding to 61818053 its reverse (35081816), we get a palindrome (96899869).

The spelling of 61818053 in words is "sixty-one million, eight hundred eighteen thousand, fifty-three".