1572285947 has 2 divisors, whose sum is σ = 1572285948. Its totient is φ = 1572285946.

The previous prime is 1572285941. The next prime is 1572285961. The reversal of 1572285947 is 7495822751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1572285947 - 2²² = 1568091643 is a prime.

It is a super-4 number, since 4×1572285947⁴ (a number of 38 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1572285895 and 1572285904.

It is not a weakly prime, because it can be changed into another prime (1572285941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786142973 + 786142974.

It is an arithmetic number, because the mean of its divisors is an integer number (786142974).

Almost surely, 2^1572285947 is an apocalyptic number.

1572285947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1572285947 is an equidigital number, since it uses as much as digits as its factorization.

1572285947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1411200, while the sum is 50.

The square root of 1572285947 is about 39652.0610687515. The cubic root of 1572285947 is about 1162.8146934215.

The spelling of 1572285947 in words is "one billion, five hundred seventy-two million, two hundred eighty-five thousand, nine hundred forty-seven".