2151432558 has 96 divisors (see below), whose sum is σ = 5332055040. Its totient is φ = 620579520.

The previous prime is 2151432539. The next prime is 2151432559. The reversal of 2151432558 is 8552341512.

2151432558 is a `hidden beast` number, since 21 + 51 + 4 + 32 + 558 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151432559) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1041835 + ... + 1043897.

It is an arithmetic number, because the mean of its divisors is an integer number (55542240).

Almost surely, 2^2151432558 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2151432558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2666027520).

2151432558 is an abundant number, since it is smaller than the sum of its proper divisors (3180622482).

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

2151432558 is a wasteful number, since it uses less digits than its factorization.

2151432558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334 (or 2331 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 2151432558 is about 46383.5375753079. The cubic root of 2151432558 is about 1290.9494758572.

The spelling of 2151432558 in words is "two billion, one hundred fifty-one million, four hundred thirty-two thousand, five hundred fifty-eight".