2557464 has 64 divisors (see below), whose sum is σ = 7875840. Its totient is φ = 673920.

The previous prime is 2557453. The next prime is 2557501. The reversal of 2557464 is 4647552.

It is a super-2 number, since 2×2557464² = 13081244222592, which contains 22 as substring.

Its product of digits (33600) is a multiple of the sum of its prime factors (1200).

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, 1599 + ... + 2769.

It is an arithmetic number, because the mean of its divisors is an integer number (123060).

2^2557464 is an apocalyptic number.

2557464 is a gapful number since it is divisible by the number (24) 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 2557464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3937920).

2557464 is an abundant number, since it is smaller than the sum of its proper divisors (5318376).

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

2557464 is a wasteful number, since it uses less digits than its factorization.

2557464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200 (or 1196 counting only the distinct ones).

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

The square root of 2557464 is about 1599.2073036351. The cubic root of 2557464 is about 136.7528889452.

The spelling of 2557464 in words is "two million, five hundred fifty-seven thousand, four hundred sixty-four".