2145552457 has 8 divisors (see below), whose sum is σ = 2179953792. Its totient is φ = 2111221200.

The previous prime is 2145552419. The next prime is 2145552481. The reversal of 2145552457 is 7542555412.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2145552457 - 2¹⁹ = 2145028169 is a prime.

It is a super-3 number, since 3×2145552457³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145553457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46032 + ... + 80062.

It is an arithmetic number, because the mean of its divisors is an integer number (272494224).

Almost surely, 2^2145552457 is an apocalyptic number.

It is an amenable number.

2145552457 is a deficient number, since it is larger than the sum of its proper divisors (34401335).

2145552457 is an equidigital number, since it uses as much as digits as its factorization.

2145552457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35039.

The product of its digits is 280000, while the sum is 40.

The square root of 2145552457 is about 46320.1085598901. The cubic root of 2145552457 is about 1289.7723006157.

The spelling of 2145552457 in words is "two billion, one hundred forty-five million, five hundred fifty-two thousand, four hundred fifty-seven".