3145072557 has 16 divisors (see below), whose sum is σ = 4698292032. Its totient is φ = 1854587520.

The previous prime is 3145072547. The next prime is 3145072559. The reversal of 3145072557 is 7552705413.

It is a happy number.

It is not a de Polignac number, because 3145072557 - 2⁷ = 3145072429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3145072559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1286688 + ... + 1289129.

It is an arithmetic number, because the mean of its divisors is an integer number (293643252).

Almost surely, 2^3145072557 is an apocalyptic number.

3145072557 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

3145072557 is a deficient number, since it is larger than the sum of its proper divisors (1553219475).

3145072557 is a wasteful number, since it uses less digits than its factorization.

3145072557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575868.

The product of its (nonzero) digits is 147000, while the sum is 39.

The square root of 3145072557 is about 56080.9464702585. The cubic root of 3145072557 is about 1465.1324581357.

The spelling of 3145072557 in words is "three billion, one hundred forty-five million, seventy-two thousand, five hundred fifty-seven".