70340551 has 4 divisors (see below), whose sum is σ = 70410600. Its totient is φ = 70270504.

The previous prime is 70340539. The next prime is 70340609. The reversal of 70340551 is 15504307.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70340551 is a prime.

It is a super-2 number, since 2×70340551² = 9895586229967202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70340251) 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, 33496 + ... + 35533.

It is an arithmetic number, because the mean of its divisors is an integer number (17602650).

Almost surely, 2^70340551 is an apocalyptic number.

70340551 is a deficient number, since it is larger than the sum of its proper divisors (70049).

70340551 is a wasteful number, since it uses less digits than its factorization.

70340551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70048.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 70340551 is about 8386.9273873094. The cubic root of 70340551 is about 412.7957861396.

Adding to 70340551 its reverse (15504307), we get a palindrome (85844858).

The spelling of 70340551 in words is "seventy million, three hundred forty thousand, five hundred fifty-one".