51459154 has 4 divisors (see below), whose sum is σ = 77188734. Its totient is φ = 25729576.

The previous prime is 51459113. The next prime is 51459157. The reversal of 51459154 is 45195415.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45195415 = 5 ⋅9039083.

It can be written as a sum of positive squares in only one way, i.e., 51451929 + 7225 = 7173^2 + 85^2 .

It is not an unprimeable number, because it can be changed into a prime (51459157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12864787 + ... + 12864790.

Almost surely, 2^51459154 is an apocalyptic number.

51459154 is a deficient number, since it is larger than the sum of its proper divisors (25729580).

51459154 is a wasteful number, since it uses less digits than its factorization.

51459154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25729579.

The product of its digits is 18000, while the sum is 34.

The square root of 51459154 is about 7173.5036070250. The cubic root of 51459154 is about 371.9525559025.

The spelling of 51459154 in words is "fifty-one million, four hundred fifty-nine thousand, one hundred fifty-four".