55551437 has 2 divisors, whose sum is σ = 55551438. Its totient is φ = 55551436.

The previous prime is 55551409. The next prime is 55551449. The reversal of 55551437 is 73415555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46635241 + 8916196 = 6829^2 + 2986^2 .

It is a cyclic number.

It is not a de Polignac number, because 55551437 - 2¹⁸ = 55289293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55551397 and 55551406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55551137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27775718 + 27775719.

It is an arithmetic number, because the mean of its divisors is an integer number (27775719).

Almost surely, 2^55551437 is an apocalyptic number.

It is an amenable number.

55551437 is a deficient number, since it is larger than the sum of its proper divisors (1).

55551437 is an equidigital number, since it uses as much as digits as its factorization.

55551437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52500, while the sum is 35.

The square root of 55551437 is about 7453.2836387729. The cubic root of 55551437 is about 381.5619848130.

The spelling of 55551437 in words is "fifty-five million, five hundred fifty-one thousand, four hundred thirty-seven".