70102481 has 4 divisors (see below), whose sum is σ = 71251764. Its totient is φ = 68953200.

The previous prime is 70102469. The next prime is 70102499. The reversal of 70102481 is 18420107.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20976400 + 49126081 = 4580^2 + 7009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70102481 is a prime.

It is a super-2 number, since 2×70102481² = 9828715684710722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70102421) 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, 574550 + ... + 574671.

It is an arithmetic number, because the mean of its divisors is an integer number (17812941).

Almost surely, 2^70102481 is an apocalyptic number.

It is an amenable number.

70102481 is a deficient number, since it is larger than the sum of its proper divisors (1149283).

70102481 is a wasteful number, since it uses less digits than its factorization.

70102481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149282.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 70102481 is about 8372.7224365794. The cubic root of 70102481 is about 412.3295525979.

Adding to 70102481 its reverse (18420107), we get a palindrome (88522588).

The spelling of 70102481 in words is "seventy million, one hundred two thousand, four hundred eighty-one".