70401551 has 24 divisors (see below), whose sum is σ = 82851552. Its totient is φ = 59628800.

The previous prime is 70401521. The next prime is 70401557. The reversal of 70401551 is 15510407.

It is not a de Polignac number, because 70401551 - 2¹⁴ = 70385167 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70401557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113795 + ... + 114411.

It is an arithmetic number, because the mean of its divisors is an integer number (3452148).

Almost surely, 2^70401551 is an apocalyptic number.

70401551 is a deficient number, since it is larger than the sum of its proper divisors (12450001).

70401551 is a wasteful number, since it uses less digits than its factorization.

70401551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 70401551 is about 8390.5632111319. The cubic root of 70401551 is about 412.9150784831.

Adding to 70401551 its reverse (15510407), we get a palindrome (85911958).

The spelling of 70401551 in words is "seventy million, four hundred one thousand, five hundred fifty-one".