55851426 has 48 divisors (see below), whose sum is σ = 131619384. Its totient is φ = 17044992.

The previous prime is 55851421. The next prime is 55851437. The reversal of 55851426 is 62415855.

It can be written as a sum of positive squares in 4 ways, for example, as 55130625 + 720801 = 7425^2 + 849^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55851421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8856 + ... + 13788.

Almost surely, 2^55851426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55851426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65809692).

55851426 is an abundant number, since it is smaller than the sum of its proper divisors (75767958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55851426 is a wasteful number, since it uses less digits than its factorization.

55851426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4995 (or 4992 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 55851426 is about 7473.3811624993. The cubic root of 55851426 is about 382.2475894630.

It can be divided in two parts, 558 and 51426, that added together give a square (51984 = 228²).

The spelling of 55851426 in words is "fifty-five million, eight hundred fifty-one thousand, four hundred twenty-six".