2153140245 has 32 divisors (see below), whose sum is σ = 3843878400. Its totient is φ = 1143519552.
The previous prime is 2153140229. The next prime is 2153140261. The reversal of 2153140245 is 5420413512.
2153140245 is a `hidden beast` number, since 215 + 3 + 1 + 402 + 45 = 666.
It is an interprime number because it is at equal distance from previous prime (2153140229) and next prime (2153140261).
It is not a de Polignac number, because 2153140245 - 24 = 2153140229 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1102 + ... + 65631.
It is an arithmetic number, because the mean of its divisors is an integer number (120121200).
Almost surely, 22153140245 is an apocalyptic number.
It is an amenable number.
2153140245 is a deficient number, since it is larger than the sum of its proper divisors (1690738155).
2153140245 is a wasteful number, since it uses less digits than its factorization.
2153140245 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 66986 (or 66980 counting only the distinct ones).
The product of its (nonzero) digits is 4800, while the sum is 27.
The square root of 2153140245 is about 46401.9422546083. The cubic root of 2153140245 is about 1291.2909467230.
Adding to 2153140245 its reverse (5420413512), we get a palindrome (7573553757).
It can be divided in two parts, 21531 and 40245, that added together give a triangular number (61776 = T351).
The spelling of 2153140245 in words is "two billion, one hundred fifty-three million, one hundred forty thousand, two hundred forty-five".
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