71254149 has 4 divisors (see below), whose sum is σ = 95005536. Its totient is φ = 47502764.

The previous prime is 71254121. The next prime is 71254159. The reversal of 71254149 is 94145217.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94145217 = 3 ⋅31381739.

It is a cyclic number.

It is not a de Polignac number, because 71254149 - 2⁸ = 71253893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71254159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11875689 + ... + 11875694.

It is an arithmetic number, because the mean of its divisors is an integer number (23751384).

Almost surely, 2^71254149 is an apocalyptic number.

It is an amenable number.

71254149 is a deficient number, since it is larger than the sum of its proper divisors (23751387).

71254149 is a wasteful number, since it uses less digits than its factorization.

71254149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23751386.

The product of its digits is 10080, while the sum is 33.

The square root of 71254149 is about 8441.2172700387. The cubic root of 71254149 is about 414.5752639042.

The spelling of 71254149 in words is "seventy-one million, two hundred fifty-four thousand, one hundred forty-nine".