55207464 has 128 divisors (see below), whose sum is σ = 159936000. Its totient is φ = 15738624.

The previous prime is 55207463. The next prime is 55207489. The reversal of 55207464 is 46470255.

It is a super-2 number, since 2×55207464² = 6095728162622592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55207463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 397107 + ... + 397245.

It is an arithmetic number, because the mean of its divisors is an integer number (1249500).

Almost surely, 2^55207464 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 55207464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79968000).

55207464 is an abundant number, since it is smaller than the sum of its proper divisors (104728536).

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

55207464 is a wasteful number, since it uses less digits than its factorization.

55207464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 55207464 is about 7430.1725417382. The cubic root of 55207464 is about 380.7728132146.

The spelling of 55207464 in words is "fifty-five million, two hundred seven thousand, four hundred sixty-four".