70326551 has 4 divisors (see below), whose sum is σ = 70382400. Its totient is φ = 70270704.

The previous prime is 70326547. The next prime is 70326559. The reversal of 70326551 is 15562307.

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

It is a cyclic number.

It is not a de Polignac number, because 70326551 - 2² = 70326547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70326559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25991 + ... + 28568.

It is an arithmetic number, because the mean of its divisors is an integer number (17595600).

Almost surely, 2^70326551 is an apocalyptic number.

70326551 is a deficient number, since it is larger than the sum of its proper divisors (55849).

70326551 is a wasteful number, since it uses less digits than its factorization.

70326551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55848.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 70326551 is about 8386.0927135347. The cubic root of 70326551 is about 412.7683978390.

Adding to 70326551 its reverse (15562307), we get a palindrome (85888858).

The spelling of 70326551 in words is "seventy million, three hundred twenty-six thousand, five hundred fifty-one".