140164551 has 6 divisors (see below), whose sum is σ = 202459920. Its totient is φ = 93443028.

The previous prime is 140164537. The next prime is 140164561. The reversal of 140164551 is 155461041.

140164551 is a `hidden beast` number, since 14 + 0 + 1 + 645 + 5 + 1 = 666.

It is not a de Polignac number, because 140164551 - 2⁶ = 140164487 is a prime.

It is a super-2 number, since 2×140164551² = 39292202714063202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140164561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7786911 + ... + 7786928.

It is an arithmetic number, because the mean of its divisors is an integer number (33743320).

Almost surely, 2^140164551 is an apocalyptic number.

140164551 is a deficient number, since it is larger than the sum of its proper divisors (62295369).

140164551 is a wasteful number, since it uses less digits than its factorization.

140164551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15573845 (or 15573842 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 140164551 is about 11839.1110730494. Note that the first 3 decimals coincide. The cubic root of 140164551 is about 519.4527662708.

It can be divided in two parts, 140164 and 551, that added together give a triangular number (140715 = T₅₃₀).

The spelling of 140164551 in words is "one hundred forty million, one hundred sixty-four thousand, five hundred fifty-one".