55097340 has 96 divisors (see below), whose sum is σ = 172005120. Its totient is φ = 13095936.

The previous prime is 55097257. The next prime is 55097401. The reversal of 55097340 is 4379055.

It is a super-3 number, since 3×55097340³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17959 + ... + 20801.

It is an arithmetic number, because the mean of its divisors is an integer number (1791720).

Almost surely, 2^55097340 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 55097340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86002560).

55097340 is an abundant number, since it is smaller than the sum of its proper divisors (116907780).

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

55097340 is a wasteful number, since it uses less digits than its factorization.

55097340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891 (or 2889 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 55097340 is about 7422.7582474441. The cubic root of 55097340 is about 380.5194649995.

The spelling of 55097340 in words is "fifty-five million, ninety-seven thousand, three hundred forty".