55553544437 has 2 divisors, whose sum is σ = 55553544438. Its totient is φ = 55553544436.

The previous prime is 55553544419. The next prime is 55553544461. The reversal of 55553544437 is 73444535555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48958642756 + 6594901681 = 221266^2 + 81209^2 .

It is a cyclic number.

It is not a de Polignac number, because 55553544437 - 2²⁸ = 55285108981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55553541437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27776772218 + 27776772219.

It is an arithmetic number, because the mean of its divisors is an integer number (27776772219).

Almost surely, 2^55553544437 is an apocalyptic number.

It is an amenable number.

55553544437 is a deficient number, since it is larger than the sum of its proper divisors (1).

55553544437 is an equidigital number, since it uses as much as digits as its factorization.

55553544437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600000, while the sum is 50.

The spelling of 55553544437 in words is "fifty-five billion, five hundred fifty-three million, five hundred forty-four thousand, four hundred thirty-seven".