70551945 has 32 divisors (see below), whose sum is σ = 127161600. Its totient is φ = 37107072.

The previous prime is 70551941. The next prime is 70551953. The reversal of 70551945 is 54915507.

It is not a de Polignac number, because 70551945 - 2² = 70551941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70551941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6276 + ... + 13434.

It is an arithmetic number, because the mean of its divisors is an integer number (3973800).

Almost surely, 2^70551945 is an apocalyptic number.

It is an amenable number.

70551945 is a deficient number, since it is larger than the sum of its proper divisors (56609655).

70551945 is a wasteful number, since it uses less digits than its factorization.

70551945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7246 (or 7240 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 70551945 is about 8399.5205220298. The cubic root of 70551945 is about 413.2088967389.

It can be divided in two parts, 705 and 51945, that added together give a triangular number (52650 = T₃₂₄).

The spelling of 70551945 in words is "seventy million, five hundred fifty-one thousand, nine hundred forty-five".