7138254551 has 4 divisors (see below), whose sum is σ = 7179516312. Its totient is φ = 7096992792.

The previous prime is 7138254547. The next prime is 7138254553. The reversal of 7138254551 is 1554528317.

It is a happy number.

7138254551 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7138254551 - 2² = 7138254547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7138254499 and 7138254508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7138254553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20630621 + ... + 20630966.

It is an arithmetic number, because the mean of its divisors is an integer number (1794879078).

Almost surely, 2^7138254551 is an apocalyptic number.

7138254551 is a deficient number, since it is larger than the sum of its proper divisors (41261761).

7138254551 is a wasteful number, since it uses less digits than its factorization.

7138254551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41261760.

The product of its digits is 168000, while the sum is 41.

The square root of 7138254551 is about 84488.1917844145. The cubic root of 7138254551 is about 1925.4430464800.

The spelling of 7138254551 in words is "seven billion, one hundred thirty-eight million, two hundred fifty-four thousand, five hundred fifty-one".