51148470 has 32 divisors (see below), whose sum is σ = 124593408. Its totient is φ = 13435488.

The previous prime is 51148469. The next prime is 51148477. The reversal of 51148470 is 7484115.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51148477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10714 + ... + 14733.

It is an arithmetic number, because the mean of its divisors is an integer number (3893544).

Almost surely, 2^51148470 is an apocalyptic number.

51148470 is an abundant number, since it is smaller than the sum of its proper divisors (73444938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51148470 is a wasteful number, since it uses less digits than its factorization.

51148470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25524.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 51148470 is about 7151.8158533340. The cubic root of 51148470 is about 371.2024913982.

The spelling of 51148470 in words is "fifty-one million, one hundred forty-eight thousand, four hundred seventy".