57148741 has 4 divisors (see below), whose sum is σ = 61544812. Its totient is φ = 52752672.

The previous prime is 57148727. The next prime is 57148753. The reversal of 57148741 is 14784175.

57148741 = 5345² + 5346².

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

It can be written as a sum of positive squares in 2 ways, for example, as 28579716 + 28569025 = 5346^2 + 5345^2 .

It is a cyclic number.

It is not a de Polignac number, because 57148741 - 2⁵ = 57148709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57148741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57148141) 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, 2198016 + ... + 2198041.

It is an arithmetic number, because the mean of its divisors is an integer number (15386203).

Almost surely, 2^57148741 is an apocalyptic number.

57148741 is the 5346-th centered square number.

It is an amenable number.

57148741 is a deficient number, since it is larger than the sum of its proper divisors (4396071).

57148741 is a wasteful number, since it uses less digits than its factorization.

57148741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4396070.

The product of its digits is 31360, while the sum is 37.

The square root of 57148741 is about 7559.6786307356. The cubic root of 57148741 is about 385.1845767010.

The spelling of 57148741 in words is "fifty-seven million, one hundred forty-eight thousand, seven hundred forty-one".