5215541400 has 120 divisors (see below), whose sum is σ = 18114404220. Its totient is φ = 1390806720.

The previous prime is 5215541393. The next prime is 5215541473. The reversal of 5215541400 is 41455125.

5215541400 is a `hidden beast` number, since 5 + 215 + 5 + 41 + 400 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×5215541400² = 54403744190227920000, which contains 22 as substring.

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 29 ways as a sum of consecutive naturals, for example, 144774 + ... + 177173.

Almost surely, 2^5215541400 is an apocalyptic number.

5215541400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

5215541400 is an abundant number, since it is smaller than the sum of its proper divisors (12898862820).

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

5215541400 is a wasteful number, since it uses less digits than its factorization.

5215541400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321975 (or 321957 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 5215541400 is about 72218.7053331753. The cubic root of 5215541400 is about 1734.2024643561.

Adding to 5215541400 its reverse (41455125), we get a palindrome (5256996525).

The spelling of 5215541400 in words is "five billion, two hundred fifteen million, five hundred forty-one thousand, four hundred".