55378053 has 16 divisors (see below), whose sum is σ = 82842240. Its totient is φ = 36558432.

The previous prime is 55378051. The next prime is 55378087. The reversal of 55378053 is 35087355.

It is not a de Polignac number, because 55378053 - 2¹ = 55378051 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 55377999 and 55378017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55378051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7176 + ... + 12737.

It is an arithmetic number, because the mean of its divisors is an integer number (5177640).

Almost surely, 2^55378053 is an apocalyptic number.

It is an amenable number.

55378053 is a deficient number, since it is larger than the sum of its proper divisors (27464187).

55378053 is a wasteful number, since it uses less digits than its factorization.

55378053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20025 (or 20019 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 55378053 is about 7441.6431653231. The cubic root of 55378053 is about 381.1646012074.

It can be divided in two parts, 553 and 78053, that added together give a triangular number (78606 = T₃₉₆).

The spelling of 55378053 in words is "fifty-five million, three hundred seventy-eight thousand, fifty-three".