55751000 has 64 divisors (see below), whose sum is σ = 131582880. Its totient is φ = 22108800.

The previous prime is 55750999. The next prime is 55751023. The reversal of 55751000 is 15755.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196859 + ... + 197141.

Almost surely, 2^55751000 is an apocalyptic number.

55751000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55751000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65791440).

55751000 is an abundant number, since it is smaller than the sum of its proper divisors (75831880).

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

55751000 is a wasteful number, since it uses less digits than its factorization.

55751000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 875, while the sum is 23.

The square root of 55751000 is about 7466.6592261868. The cubic root of 55751000 is about 382.0183465691.

Adding to 55751000 its reverse (15755), we get a palindrome (55766755).

The spelling of 55751000 in words is "fifty-five million, seven hundred fifty-one thousand".