55740312 has 96 divisors (see below), whose sum is σ = 159803280. Its totient is φ = 18195840.

The previous prime is 55740287. The next prime is 55740337. The reversal of 55740312 is 21304755.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55740287) and next prime (55740337).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102762 + ... + 103302.

Almost surely, 2^55740312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55740312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79901640).

55740312 is an abundant number, since it is smaller than the sum of its proper divisors (104062968).

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

55740312 is a wasteful number, since it uses less digits than its factorization.

55740312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 55740312 is about 7465.9434768822. The cubic root of 55740312 is about 381.9939328185.

The spelling of 55740312 in words is "fifty-five million, seven hundred forty thousand, three hundred twelve".