1572001531 has 2 divisors, whose sum is σ = 1572001532. Its totient is φ = 1572001530.

The previous prime is 1572001523. The next prime is 1572001567. The reversal of 1572001531 is 1351002751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1572001531 - 2³ = 1572001523 is a prime.

It is a super-2 number, since 2×1572001531² = 4942377626932687922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1572001496 and 1572001505.

It is not a weakly prime, because it can be changed into another prime (1572001591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786000765 + 786000766.

It is an arithmetic number, because the mean of its divisors is an integer number (786000766).

Almost surely, 2^1572001531 is an apocalyptic number.

1572001531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1572001531 is an equidigital number, since it uses as much as digits as its factorization.

1572001531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 1572001531 is about 39648.4745103768. The cubic root of 1572001531 is about 1162.7445740626.

The spelling of 1572001531 in words is "one billion, five hundred seventy-two million, one thousand, five hundred thirty-one".