74570131 has 2 divisors, whose sum is σ = 74570132. Its totient is φ = 74570130.

The previous prime is 74570087. The next prime is 74570137. The reversal of 74570131 is 13107547.

It is a strong prime.

It is an emirp because it is prime and its reverse (13107547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74570131 - 2⁹ = 74569619 is a prime.

It is a super-2 number, since 2×74570131² = 11121408874714322, which contains 22 as substring.

It is equal to p_4370554 and since 74570131 and 4370554 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74570131.

It is not a weakly prime, because it can be changed into another prime (74570137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37285065 + 37285066.

It is an arithmetic number, because the mean of its divisors is an integer number (37285066).

Almost surely, 2^74570131 is an apocalyptic number.

74570131 is a deficient number, since it is larger than the sum of its proper divisors (1).

74570131 is an equidigital number, since it uses as much as digits as its factorization.

74570131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 74570131 is about 8635.3998749334. The cubic root of 74570131 is about 420.9090871786.

Adding to 74570131 its reverse (13107547), we get a palindrome (87677678).

It can be divided in two parts, 745 and 70131, that added together give a triangular number (70876 = T₃₇₆).

The spelling of 74570131 in words is "seventy-four million, five hundred seventy thousand, one hundred thirty-one".