76257481 has 4 divisors (see below), whose sum is σ = 78318532. Its totient is φ = 74196432.

The previous prime is 76257473. The next prime is 76257487. The reversal of 76257481 is 18475267.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18475267 = 691 ⋅26737.

It can be written as a sum of positive squares in 2 ways, for example, as 38937600 + 37319881 = 6240^2 + 6109^2 .

It is a cyclic number.

It is not a de Polignac number, because 76257481 - 2³ = 76257473 is a prime.

It is a super-2 number, since 2×76257481² = 11630406816930722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76257487) 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, 1030470 + ... + 1030543.

It is an arithmetic number, because the mean of its divisors is an integer number (19579633).

Almost surely, 2^76257481 is an apocalyptic number.

It is an amenable number.

76257481 is a deficient number, since it is larger than the sum of its proper divisors (2061051).

76257481 is a wasteful number, since it uses less digits than its factorization.

76257481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061050.

The product of its digits is 94080, while the sum is 40.

The square root of 76257481 is about 8732.5529485941. The cubic root of 76257481 is about 424.0601719071.

The spelling of 76257481 in words is "seventy-six million, two hundred fifty-seven thousand, four hundred eighty-one".