55278037 has 8 divisors (see below), whose sum is σ = 56908800. Its totient is φ = 53654544.

The previous prime is 55278029. The next prime is 55278043. The reversal of 55278037 is 73087255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55278037 - 2³ = 55278029 is a prime.

It is a super-2 number, since 2×55278037² = 6111322749146738, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55277987 and 55278005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55278077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16164 + ... + 19282.

It is an arithmetic number, because the mean of its divisors is an integer number (7113600).

Almost surely, 2^55278037 is an apocalyptic number.

It is an amenable number.

55278037 is a deficient number, since it is larger than the sum of its proper divisors (1630763).

55278037 is a wasteful number, since it uses less digits than its factorization.

55278037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3635.

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 55278037 is about 7434.9201071699. The cubic root of 55278037 is about 380.9349944091.

The spelling of 55278037 in words is "fifty-five million, two hundred seventy-eight thousand, thirty-seven".