55153387 has 2 divisors, whose sum is σ = 55153388. Its totient is φ = 55153386.

The previous prime is 55153381. The next prime is 55153403. The reversal of 55153387 is 78335155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55153387 - 2¹¹ = 55151339 is a prime.

It is not a weakly prime, because it can be changed into another prime (55153381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27576693 + 27576694.

It is an arithmetic number, because the mean of its divisors is an integer number (27576694).

Almost surely, 2^55153387 is an apocalyptic number.

55153387 is a deficient number, since it is larger than the sum of its proper divisors (1).

55153387 is an equidigital number, since it uses as much as digits as its factorization.

55153387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63000, while the sum is 37.

The square root of 55153387 is about 7426.5326364327. The cubic root of 55153387 is about 380.6484473123.

The spelling of 55153387 in words is "fifty-five million, one hundred fifty-three thousand, three hundred eighty-seven".