53661003 has 8 divisors (see below), whose sum is σ = 78052416. Its totient is φ = 32521800.

The previous prime is 53660983. The next prime is 53661011. The reversal of 53661003 is 30016635.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53661003 - 2⁶ = 53660939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53661103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813013 + ... + 813078.

It is an arithmetic number, because the mean of its divisors is an integer number (9756552).

Almost surely, 2^53661003 is an apocalyptic number.

53661003 is a deficient number, since it is larger than the sum of its proper divisors (24391413).

53661003 is a wasteful number, since it uses less digits than its factorization.

53661003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626105.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 53661003 is about 7325.3670897778. The cubic root of 53661003 is about 377.1837106268.

Adding to 53661003 its reverse (30016635), we get a palindrome (83677638).

The spelling of 53661003 in words is "fifty-three million, six hundred sixty-one thousand, three".