1291275254 has 8 divisors (see below), whose sum is σ = 1937096760. Its totient is φ = 645576336.

The previous prime is 1291275233. The next prime is 1291275281. The reversal of 1291275254 is 4525721921.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3137 + ... + 50915.

It is an arithmetic number, because the mean of its divisors is an integer number (242137095).

Almost surely, 2^1291275254 is an apocalyptic number.

1291275254 is a deficient number, since it is larger than the sum of its proper divisors (645821506).

1291275254 is a wasteful number, since it uses less digits than its factorization.

1291275254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61294.

The product of its digits is 50400, while the sum is 38.

The square root of 1291275254 is about 35934.3186104871. The cubic root of 1291275254 is about 1088.9458298412.

The spelling of 1291275254 in words is "one billion, two hundred ninety-one million, two hundred seventy-five thousand, two hundred fifty-four".