53553123 has 32 divisors (see below), whose sum is σ = 85908480. Its totient is φ = 32775840.

The previous prime is 53553119. The next prime is 53553127. The reversal of 53553123 is 32135535.

53553123 is a `hidden beast` number, since 535 + 5 + 3 + 123 = 666.

It is a Cunningham number, because it is equal to 7318²-1.

It is an interprime number because it is at equal distance from previous prime (53553119) and next prime (53553127).

It is not a de Polignac number, because 53553123 - 2² = 53553119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (53553127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94840 + ... + 95402.

It is an arithmetic number, because the mean of its divisors is an integer number (2684640).

Almost surely, 2^53553123 is an apocalyptic number.

53553123 is a deficient number, since it is larger than the sum of its proper divisors (32355357).

53553123 is a wasteful number, since it uses less digits than its factorization.

53553123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856 (or 850 counting only the distinct ones).

The product of its digits is 6750, while the sum is 27.

The square root of 53553123 is about 7317.9999316753. Note that the first 4 decimals coincide. The cubic root of 53553123 is about 376.9307778636.

Adding to 53553123 its reverse (32135535), we get a palindrome (85688658).

The spelling of 53553123 in words is "fifty-three million, five hundred fifty-three thousand, one hundred twenty-three".