53872187477 has 2 divisors, whose sum is σ = 53872187478. Its totient is φ = 53872187476.

The previous prime is 53872187399. The next prime is 53872187507. The reversal of 53872187477 is 77478127835.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48171031441 + 5701156036 = 219479^2 + 75506^2 .

It is a cyclic number.

It is not a de Polignac number, because 53872187477 - 2¹⁰ = 53872186453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53872187177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26936093738 + 26936093739.

It is an arithmetic number, because the mean of its divisors is an integer number (26936093739).

Almost surely, 2^53872187477 is an apocalyptic number.

It is an amenable number.

53872187477 is a deficient number, since it is larger than the sum of its proper divisors (1).

53872187477 is an equidigital number, since it uses as much as digits as its factorization.

53872187477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18439680, while the sum is 59.

The spelling of 53872187477 in words is "fifty-three billion, eight hundred seventy-two million, one hundred eighty-seven thousand, four hundred seventy-seven".