53512455261 has 4 divisors (see below), whose sum is σ = 71349940352. Its totient is φ = 35674970172.

The previous prime is 53512455257. The next prime is 53512455277. The reversal of 53512455261 is 16255421535.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 53512455261 - 2² = 53512455257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53512455761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8918742541 + ... + 8918742546.

It is an arithmetic number, because the mean of its divisors is an integer number (17837485088).

Almost surely, 2^53512455261 is an apocalyptic number.

It is an amenable number.

53512455261 is a deficient number, since it is larger than the sum of its proper divisors (17837485091).

53512455261 is a wasteful number, since it uses less digits than its factorization.

53512455261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17837485090.

The product of its digits is 180000, while the sum is 39.

Adding to 53512455261 its reverse (16255421535), we get a palindrome (69767876796).

The spelling of 53512455261 in words is "fifty-three billion, five hundred twelve million, four hundred fifty-five thousand, two hundred sixty-one".