2557378029 has 8 divisors (see below), whose sum is σ = 3412700352. Its totient is φ = 1703487200.

The previous prime is 2557377971. The next prime is 2557378037. The reversal of 2557378029 is 9208737552.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2557378029 - 2⁸ = 2557377773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557378829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353697 + ... + 360854.

It is an arithmetic number, because the mean of its divisors is an integer number (426587544).

Almost surely, 2^2557378029 is an apocalyptic number.

It is an amenable number.

2557378029 is a deficient number, since it is larger than the sum of its proper divisors (855322323).

2557378029 is a wasteful number, since it uses less digits than its factorization.

2557378029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715747.

The product of its (nonzero) digits is 1058400, while the sum is 48.

The square root of 2557378029 is about 50570.5252988339. The cubic root of 2557378029 is about 1367.5135657898.

The spelling of 2557378029 in words is "two billion, five hundred fifty-seven million, three hundred seventy-eight thousand, twenty-nine".